diff --git a/modules/backend/ServiceProvider.php b/modules/backend/ServiceProvider.php
index 1a2dc4022..b0a5026f8 100644
--- a/modules/backend/ServiceProvider.php
+++ b/modules/backend/ServiceProvider.php
@@ -4,6 +4,7 @@ use App;
 use Backend;
 use BackendMenu;
 use BackendAuth;
+use Backend\Models\UserRole;
 use Backend\Classes\WidgetManager;
 use System\Classes\MailManager;
 use System\Classes\CombineAssets;
@@ -168,7 +169,12 @@ class ServiceProvider extends ModuleServiceProvider
                 'media.manage_media' => [
                     'label' => 'backend::lang.permissions.manage_media',
                     'tab' => 'system::lang.permissions.name',
-                ]
+                ],
+                'backend.allow_unsafe_markdown' => [
+                    'label' => 'backend::lang.permissions.allow_unsafe_markdown',
+                    'tab' => 'system::lang.permissions.name',
+                    'roles' => UserRole::CODE_DEVELOPER,
+                ],
             ]);
         });
     }
diff --git a/modules/backend/controllers/preferences/index.htm b/modules/backend/controllers/preferences/index.htm
index 3b3061a2d..0183afddf 100644
--- a/modules/backend/controllers/preferences/index.htm
+++ b/modules/backend/controllers/preferences/index.htm
@@ -11,6 +11,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/backend/controllers/usergroups/create.htm b/modules/backend/controllers/usergroups/create.htm
index 7e8cf3665..695ae69f3 100644
--- a/modules/backend/controllers/usergroups/create.htm
+++ b/modules/backend/controllers/usergroups/create.htm
@@ -19,14 +19,16 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
                     class="btn btn-primary">
                     <?= e(trans('backend::lang.form.create')) ?>
                 </button>
-                <button 
+                <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
diff --git a/modules/backend/controllers/usergroups/update.htm b/modules/backend/controllers/usergroups/update.htm
index d73dc55f9..54e64a65b 100644
--- a/modules/backend/controllers/usergroups/update.htm
+++ b/modules/backend/controllers/usergroups/update.htm
@@ -19,6 +19,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
@@ -28,6 +29,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/backend/controllers/userroles/create.htm b/modules/backend/controllers/userroles/create.htm
index 07f55b3b1..a4e2b037d 100644
--- a/modules/backend/controllers/userroles/create.htm
+++ b/modules/backend/controllers/userroles/create.htm
@@ -19,14 +19,16 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
                     class="btn btn-primary">
                     <?= e(trans('backend::lang.form.create')) ?>
                 </button>
-                <button 
+                <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
diff --git a/modules/backend/controllers/userroles/update.htm b/modules/backend/controllers/userroles/update.htm
index 9a50815d9..a695862b1 100644
--- a/modules/backend/controllers/userroles/update.htm
+++ b/modules/backend/controllers/userroles/update.htm
@@ -19,6 +19,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
@@ -28,6 +29,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/backend/controllers/users/create.htm b/modules/backend/controllers/users/create.htm
index 1340ef0d6..eecc783c3 100644
--- a/modules/backend/controllers/users/create.htm
+++ b/modules/backend/controllers/users/create.htm
@@ -20,6 +20,7 @@
                     <button
                         type="submit"
                         data-request="onSave"
+                        data-request-validate
                         data-hotkey="ctrl+s, cmd+s"
                         data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
                         class="btn btn-primary">
@@ -28,6 +29,7 @@
                     <button
                         type="button"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="close:1"
                         data-hotkey="ctrl+enter, cmd+enter"
                         data-load-indicator="<?= e(trans('backend::lang.form.creating')) ?>"
diff --git a/modules/backend/controllers/users/myaccount.htm b/modules/backend/controllers/users/myaccount.htm
index 54b561d7c..29b820a11 100644
--- a/modules/backend/controllers/users/myaccount.htm
+++ b/modules/backend/controllers/users/myaccount.htm
@@ -22,6 +22,7 @@
                     <button
                         type="submit"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="redirect:0"
                         data-hotkey="ctrl+s, cmd+s"
                         data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
@@ -32,6 +33,7 @@
                         <button
                             type="button"
                             data-request="onSave"
+                            data-request-validate
                             data-request-data="close:1"
                             data-hotkey="ctrl+enter, cmd+enter"
                             data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/backend/controllers/users/update.htm b/modules/backend/controllers/users/update.htm
index cf6902392..9cef82324 100644
--- a/modules/backend/controllers/users/update.htm
+++ b/modules/backend/controllers/users/update.htm
@@ -24,6 +24,7 @@
                     <button
                         type="submit"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="redirect:0"
                         data-hotkey="ctrl+s, cmd+s"
                         data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
@@ -33,6 +34,7 @@
                     <button
                         type="button"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="close:1"
                         data-hotkey="ctrl+enter, cmd+enter"
                         data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/backend/formwidgets/MarkdownEditor.php b/modules/backend/formwidgets/MarkdownEditor.php
index c8222e14a..d6ec6accb 100644
--- a/modules/backend/formwidgets/MarkdownEditor.php
+++ b/modules/backend/formwidgets/MarkdownEditor.php
@@ -1,7 +1,8 @@
 <?php namespace Backend\FormWidgets;
 
-use BackendAuth;
+use Html;
 use Markdown;
+use BackendAuth;
 use Backend\Classes\FormWidgetBase;
 
 /**
@@ -42,12 +43,12 @@ class MarkdownEditor extends FormWidgetBase
     //
 
     /**
-     * @inheritDoc
+     * {@inheritDoc}
      */
     protected $defaultAlias = 'markdown';
 
     /**
-     * @inheritDoc
+     * {@inheritDoc}
      */
     public function init()
     {
@@ -60,7 +61,7 @@ class MarkdownEditor extends FormWidgetBase
     }
 
     /**
-     * @inheritDoc
+     * {@inheritDoc}
      */
     public function render()
     {
@@ -84,7 +85,7 @@ class MarkdownEditor extends FormWidgetBase
     }
 
     /**
-     * @inheritDoc
+     * {@inheritDoc}
      */
     protected function loadAssets()
     {
@@ -93,6 +94,34 @@ class MarkdownEditor extends FormWidgetBase
         $this->addJs('/modules/backend/formwidgets/codeeditor/assets/js/build-min.js', 'core');
     }
 
+    /**
+     * Check to see if the generated HTML should be cleaned to remove any potential XSS
+     *
+     * @return boolean
+     */
+    protected function shouldCleanHtml()
+    {
+        $user = BackendAuth::getUser();
+        return !$user || !$user->hasAccess('backend.allow_unsafe_markdown');
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getSaveValue($value)
+    {
+        if ($this->shouldCleanHtml()) {
+            $value = Html::clean($value);
+        }
+
+        return $value;
+    }
+
+    /**
+     * AJAX handler to render the markdown as HTML
+     *
+     * @return array ['preview' => $generatedHTML]
+     */
     public function onRefresh()
     {
         $value = post($this->getFieldName());
@@ -100,6 +129,10 @@ class MarkdownEditor extends FormWidgetBase
             ? Markdown::parseSafe($value)
             : Markdown::parse($value);
 
+        if ($this->shouldCleanHtml()) {
+            $previewHtml = Html::clean($previewHtml);
+        }
+
         return [
             'preview' => $previewHtml
         ];
diff --git a/modules/backend/lang/en/lang.php b/modules/backend/lang/en/lang.php
index f4e933c03..b173798ef 100644
--- a/modules/backend/lang/en/lang.php
+++ b/modules/backend/lang/en/lang.php
@@ -567,6 +567,7 @@ return [
     ],
     'permissions' => [
         'manage_media' => 'Upload and manage media contents - images, videos, sounds, documents',
+        'allow_unsafe_markdown' => 'Use unsafe Markdown (Can include Javascript)',
     ],
     'mediafinder' => [
         'label' => 'Media Finder',
diff --git a/modules/backend/lang/nl/lang.php b/modules/backend/lang/nl/lang.php
index 9f15ca753..d214a087c 100644
--- a/modules/backend/lang/nl/lang.php
+++ b/modules/backend/lang/nl/lang.php
@@ -48,6 +48,10 @@ return [
         'impersonate_working' => 'Inloggen als...',
         'impersonating' => 'Inloggen als :full_name',
         'stop_impersonating' => 'Terugkeren',
+        'unsuspend' => 'Blokkering opheffen',
+        'unsuspend_confirm' => 'Weet je zeker dat je de blokkering voor deze gebruiker wilt opheffen?',
+        'unsuspend_success' => 'De blokkade voor deze gebruiker is opgeheven.',
+        'unsuspend_working' => 'Blokkering opheffen...',
         'signed_in_as' => 'Ingelogd als :full_name',
         'sign_out' => 'Uitloggen',
         'login' => 'Inloggen',
@@ -414,6 +418,12 @@ return [
         'line_breaker_tags_comment' => 'Een lijst van HTML-tags waartussen een line breaker element wordt geplaatst.',
         'toolbar_buttons' => 'Toolbar knoppen',
         'toolbar_buttons_comment' => 'De toolbar knoppen die standaard getoond worden door de Rich Editor.',
+        'toolbar_buttons_preset' => 'Voeg preset toe voor toolbar knoppen:',
+        'toolbar_buttons_presets' => [
+            'default' => 'Standaard',
+            'minimal' => 'Minimaal',
+            'full' => 'Volledig',
+        ],
     ],
     'tooltips' => [
         'preview_website' => 'Voorvertoning website',
@@ -440,9 +450,9 @@ return [
         'app_tagline' => 'Applicatie slogan',
         'app_tagline_description' => 'Deze slogan wordt weergegeven in het aanmeldvenster van de beheeromgeving.',
         'colors' => 'Kleuren',
-        'primary_color' => 'Primair color',
-        'secondary_color' => 'Secundair color',
-        'accent_color' => 'Accent color',
+        'primary_color' => 'Primaire kleur',
+        'secondary_color' => 'Secundaire kleur',
+        'accent_color' => 'Accentkleur',
         'styles' => 'Stijlen',
         'custom_stylesheet' => 'Aangepaste stylesheet',
         'navigation' => 'Navigatie',
@@ -550,12 +560,14 @@ return [
             'iso_8859_13' => 'ISO-8859-13 (Latin-7, Baltic Rim)',
             'iso_8859_14' => 'ISO-8859-14 (Latin-8, Celtic)',
             'iso_8859_15' => 'ISO-8859-15 (Latin-9, Western European revision with euro sign)',
+            'windows_1250' => 'Windows-1250 (CP1250, Central and Eastern European)',
             'windows_1251' => 'Windows-1251 (CP1251)',
             'windows_1252' => 'Windows-1252 (CP1252)',
         ],
     ],
     'permissions' => [
-        'manage_media' => 'Beheer media',
+        'manage_media' => 'Beheer media (afbeeldingen, videos, geluiden, documenten)',
+        'allow_unsafe_markdown' => 'Gebruik onveilige Markdown (Kan Javascript bevatten)',
     ],
     'mediafinder' => [
         'label' => 'Media zoeker',
diff --git a/modules/backend/widgets/filter/partials/_filter.htm b/modules/backend/widgets/filter/partials/_filter.htm
index 35f867595..4bec44577 100644
--- a/modules/backend/widgets/filter/partials/_filter.htm
+++ b/modules/backend/widgets/filter/partials/_filter.htm
@@ -1,5 +1,5 @@
 <div
-    class="control-filter"
+    class="control-filter <?= $cssClasses ?>"
     data-control="filterwidget"
     data-options-handler="<?= $this->getEventHandler('onFilterGetOptions') ?>"
     data-update-handler="<?= $this->getEventHandler('onFilterUpdate') ?>">
diff --git a/modules/cms/controllers/themeoptions/update.htm b/modules/cms/controllers/themeoptions/update.htm
index 341360910..8983d1516 100644
--- a/modules/cms/controllers/themeoptions/update.htm
+++ b/modules/cms/controllers/themeoptions/update.htm
@@ -19,6 +19,7 @@
                     <button
                         type="submit"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="redirect:0"
                         data-hotkey="ctrl+s, cmd+s"
                         data-load-indicator="<?= e(trans('cms::lang.theme.saving')) ?>"
@@ -28,6 +29,7 @@
                     <button
                         type="button"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="close:1"
                         data-hotkey="ctrl+enter, cmd+enter"
                         data-load-indicator="<?= e(trans('cms::lang.theme.saving')) ?>"
diff --git a/modules/cms/lang/nl/lang.php b/modules/cms/lang/nl/lang.php
index af2818fce..ab6ec9fa7 100644
--- a/modules/cms/lang/nl/lang.php
+++ b/modules/cms/lang/nl/lang.php
@@ -250,6 +250,8 @@ return [
         'no_records' => 'Geen componenten gevonden',
         'not_found' => 'Het component \':name\' is niet gevonden.',
         'method_not_found' => 'Het component \':name\' bevat geen \':method\' methode.',
+        'soft_component' => 'Soft Component',
+        'soft_component_description' => 'Dit component ontbreekt, maar is optioneel.',
     ],
     'template' => [
         'invalid_type' => 'Onbekend type template.',
diff --git a/modules/system/assets/js/framework-min.js b/modules/system/assets/js/framework-min.js
index e0a487918..866e83dd5 100644
--- a/modules/system/assets/js/framework-min.js
+++ b/modules/system/assets/js/framework-min.js
@@ -4,7 +4,7 @@ if(window.jQuery.request!==undefined){throw new Error('The OctoberCMS framework
 +function($){"use strict";var Request=function(element,handler,options){var $el=this.$el=$(element);this.options=options||{};if(handler===undefined){throw new Error('The request handler name is not specified.')}
 if(!handler.match(/^(?:\w+\:{2})?on*/)){throw new Error('Invalid handler name. The correct handler name format is: "onEvent".')}
 var $form=options.form?$(options.form):$el.closest('form'),$triggerEl=!!$form.length?$form:$el,context={handler:handler,options:options}
-if(typeof document.createElement('input').reportValidity=='function'&&$form&&$form[0]&&!$form[0].checkValidity()){$form[0].reportValidity();return false;}
+if((options.validate!==undefined)&&typeof document.createElement('input').reportValidity=='function'&&$form&&$form[0]&&!$form[0].checkValidity()){$form[0].reportValidity();return false;}
 $el.trigger('ajaxSetup',[context])
 var _event=jQuery.Event('oc.beforeRequest')
 $triggerEl.trigger(_event,context)
@@ -103,7 +103,7 @@ return result.join('&')}
 var old=$.fn.request
 $.fn.request=function(handler,option){var args=arguments
 var $this=$(this).first()
-var data={evalBeforeUpdate:$this.data('request-before-update'),evalSuccess:$this.data('request-success'),evalError:$this.data('request-error'),evalComplete:$this.data('request-complete'),ajaxGlobal:$this.data('request-ajax-global'),confirm:$this.data('request-confirm'),redirect:$this.data('request-redirect'),loading:$this.data('request-loading'),flash:$this.data('request-flash'),files:$this.data('request-files'),form:$this.data('request-form'),url:$this.data('request-url'),update:paramToObj('data-request-update',$this.data('request-update')),data:paramToObj('data-request-data',$this.data('request-data'))}
+var data={evalBeforeUpdate:$this.data('request-before-update'),evalSuccess:$this.data('request-success'),evalError:$this.data('request-error'),evalComplete:$this.data('request-complete'),ajaxGlobal:$this.data('request-ajax-global'),confirm:$this.data('request-confirm'),redirect:$this.data('request-redirect'),loading:$this.data('request-loading'),flash:$this.data('request-flash'),files:$this.data('request-files'),validate:$this.data('request-validate'),form:$this.data('request-form'),url:$this.data('request-url'),update:paramToObj('data-request-update',$this.data('request-update')),data:paramToObj('data-request-data',$this.data('request-data'))}
 if(!handler)handler=$this.data('request')
 var options=$.extend(true,{},Request.DEFAULTS,data,typeof option=='object'&&option)
 return new Request($this,handler,options)}
diff --git a/modules/system/assets/js/framework.combined-min.js b/modules/system/assets/js/framework.combined-min.js
index dc8316b3e..b8eef5183 100644
--- a/modules/system/assets/js/framework.combined-min.js
+++ b/modules/system/assets/js/framework.combined-min.js
@@ -4,7 +4,7 @@ if(window.jQuery.request!==undefined){throw new Error('The OctoberCMS framework
 +function($){"use strict";var Request=function(element,handler,options){var $el=this.$el=$(element);this.options=options||{};if(handler===undefined){throw new Error('The request handler name is not specified.')}
 if(!handler.match(/^(?:\w+\:{2})?on*/)){throw new Error('Invalid handler name. The correct handler name format is: "onEvent".')}
 var $form=options.form?$(options.form):$el.closest('form'),$triggerEl=!!$form.length?$form:$el,context={handler:handler,options:options}
-if(typeof document.createElement('input').reportValidity=='function'&&$form&&$form[0]&&!$form[0].checkValidity()){$form[0].reportValidity();return false;}
+if((options.validate!==undefined)&&typeof document.createElement('input').reportValidity=='function'&&$form&&$form[0]&&!$form[0].checkValidity()){$form[0].reportValidity();return false;}
 $el.trigger('ajaxSetup',[context])
 var _event=jQuery.Event('oc.beforeRequest')
 $triggerEl.trigger(_event,context)
@@ -103,7 +103,7 @@ return result.join('&')}
 var old=$.fn.request
 $.fn.request=function(handler,option){var args=arguments
 var $this=$(this).first()
-var data={evalBeforeUpdate:$this.data('request-before-update'),evalSuccess:$this.data('request-success'),evalError:$this.data('request-error'),evalComplete:$this.data('request-complete'),ajaxGlobal:$this.data('request-ajax-global'),confirm:$this.data('request-confirm'),redirect:$this.data('request-redirect'),loading:$this.data('request-loading'),flash:$this.data('request-flash'),files:$this.data('request-files'),form:$this.data('request-form'),url:$this.data('request-url'),update:paramToObj('data-request-update',$this.data('request-update')),data:paramToObj('data-request-data',$this.data('request-data'))}
+var data={evalBeforeUpdate:$this.data('request-before-update'),evalSuccess:$this.data('request-success'),evalError:$this.data('request-error'),evalComplete:$this.data('request-complete'),ajaxGlobal:$this.data('request-ajax-global'),confirm:$this.data('request-confirm'),redirect:$this.data('request-redirect'),loading:$this.data('request-loading'),flash:$this.data('request-flash'),files:$this.data('request-files'),validate:$this.data('request-validate'),form:$this.data('request-form'),url:$this.data('request-url'),update:paramToObj('data-request-update',$this.data('request-update')),data:paramToObj('data-request-data',$this.data('request-data'))}
 if(!handler)handler=$this.data('request')
 var options=$.extend(true,{},Request.DEFAULTS,data,typeof option=='object'&&option)
 return new Request($this,handler,options)}
diff --git a/modules/system/assets/js/framework.js b/modules/system/assets/js/framework.js
index bf1038929..448a89500 100644
--- a/modules/system/assets/js/framework.js
+++ b/modules/system/assets/js/framework.js
@@ -39,7 +39,7 @@ if (window.jQuery.request !== undefined) {
         /*
          * Validate the form client-side
          */
-        if (typeof document.createElement('input').reportValidity == 'function' && $form && $form[0] && !$form[0].checkValidity()) {
+        if ((options.validate !== undefined) && typeof document.createElement('input').reportValidity == 'function' && $form && $form[0] && !$form[0].checkValidity()) {
             $form[0].reportValidity();
             return false;
         }
@@ -446,6 +446,7 @@ if (window.jQuery.request !== undefined) {
             loading: $this.data('request-loading'),
             flash: $this.data('request-flash'),
             files: $this.data('request-files'),
+            validate: $this.data('request-validate'),
             form: $this.data('request-form'),
             url: $this.data('request-url'),
             update: paramToObj('data-request-update', $this.data('request-update')),
diff --git a/modules/system/assets/ui/js/inspector.editor.autocomplete.js b/modules/system/assets/ui/js/inspector.editor.autocomplete.js
index 6e6215c09..64c835f3e 100644
--- a/modules/system/assets/ui/js/inspector.editor.autocomplete.js
+++ b/modules/system/assets/ui/js/inspector.editor.autocomplete.js
@@ -142,7 +142,7 @@
         return result
     }
 
-    AutocompleteEditor.prototype.onInspectorPropertyChanged = function(property, value) {
+    AutocompleteEditor.prototype.onInspectorPropertyChanged = function(property) {
         if (!this.propertyDefinition.depends || this.propertyDefinition.depends.indexOf(property) === -1) {
             return
         }
@@ -219,7 +219,7 @@
         var itemsEvent = $.Event('autocompleteitems.oc.inspector')
 
         $inspectable.trigger(itemsEvent, [{
-            values: values, 
+            values: values,
             callback: this.proxy(this.itemsRequestDone),
             property: this.inspector.getPropertyPath(this.propertyDefinition.property),
             propertyDefinition: this.propertyDefinition
@@ -253,4 +253,4 @@
     }
 
     $.oc.inspector.propertyEditors.autocomplete = AutocompleteEditor
-}(window.jQuery);
\ No newline at end of file
+}(window.jQuery);
diff --git a/modules/system/assets/ui/js/inspector.editor.dropdown.js b/modules/system/assets/ui/js/inspector.editor.dropdown.js
index 124c402e5..b5d2e25fe 100644
--- a/modules/system/assets/ui/js/inspector.editor.dropdown.js
+++ b/modules/system/assets/ui/js/inspector.editor.dropdown.js
@@ -112,6 +112,9 @@
             dropdownCssClass: 'ocInspectorDropdown'
         }
 
+        if (this.propertyDefinition.emptyOption !== undefined) {
+            options.placeholder = this.propertyDefinition.emptyOption
+        }
         if (this.propertyDefinition.placeholder !== undefined) {
             options.placeholder = this.propertyDefinition.placeholder
         }
@@ -131,7 +134,7 @@
     }
 
     DropdownEditor.prototype.createPlaceholder = function(select) {
-        var placeholder = this.propertyDefinition.placeholder
+        var placeholder = this.propertyDefinition.placeholder || this.propertyDefinition.emptyOption
 
         if (placeholder !== undefined && !Modernizr.touchevents) {
             this.createOption(select, null, null)
@@ -202,7 +205,7 @@
         this.inspector.setPropertyValue(this.propertyDefinition.property, this.normalizeValue(select.value), this.initialization)
     }
 
-    DropdownEditor.prototype.onInspectorPropertyChanged = function(property, value) {
+    DropdownEditor.prototype.onInspectorPropertyChanged = function(property) {
         if (!this.propertyDefinition.depends || this.propertyDefinition.depends.indexOf(property) === -1) {
             return
         }
@@ -260,7 +263,7 @@
             return false
         }
 
-        return BaseProto.isEmptyValue.call(this, value) 
+        return BaseProto.isEmptyValue.call(this, value)
     }
 
     //
@@ -307,7 +310,8 @@
         var currentValue = this.inspector.getPropertyValue(this.propertyDefinition.property),
             data = this.getRootSurface().getValues(),
             self = this,
-            $form = $(this.getSelect()).closest('form')
+            $form = $(this.getSelect()).closest('form'),
+            dependents = this.inspector.findDependentProperties(this.propertyDefinition.property)
 
         if (currentValue === undefined) {
             currentValue = this.propertyDefinition.default
@@ -316,6 +320,15 @@
         var callback = function dropdownOptionsRequestDoneClosure(data) {
             self.hideLoadingIndicator()
             self.optionsRequestDone(data, currentValue, true)
+
+            if (dependents.length > 0) {
+                for (var i in dependents) {
+                    var editor = self.inspector.findPropertyEditor(dependents[i])
+                    if (editor && typeof editor.onInspectorPropertyChanged === 'function') {
+                        editor.onInspectorPropertyChanged(self.propertyDefinition.property)
+                    }
+                }
+            }
         }
 
         if (this.propertyDefinition.depends) {
@@ -347,7 +360,7 @@
         var optionsEvent = $.Event('dropdownoptions.oc.inspector')
 
         $inspectable.trigger(optionsEvent, [{
-            values: values, 
+            values: values,
             callback: callback,
             property: this.inspector.getPropertyPath(this.propertyDefinition.property),
             propertyDefinition: this.propertyDefinition
@@ -434,4 +447,4 @@
     }
 
     $.oc.inspector.propertyEditors.dropdown = DropdownEditor
-}(window.jQuery);
\ No newline at end of file
+}(window.jQuery);
diff --git a/modules/system/assets/ui/js/inspector.surface.js b/modules/system/assets/ui/js/inspector.surface.js
index e536d1cde..a9b3e1375 100644
--- a/modules/system/assets/ui/js/inspector.surface.js
+++ b/modules/system/assets/ui/js/inspector.surface.js
@@ -28,9 +28,9 @@
      * - containerElement container DOM element
      * - properties array (array of objects)
      * - values - property values, an object
-     * - inspectorUniqueId - a string containing the unique inspector identifier. 
-     *   The identifier should be a constant for an inspectable element. Use 
-     *   $.oc.inspector.helpers.generateElementUniqueId(element) to generate a persistent ID 
+     * - inspectorUniqueId - a string containing the unique inspector identifier.
+     *   The identifier should be a constant for an inspectable element. Use
+     *   $.oc.inspector.helpers.generateElementUniqueId(element) to generate a persistent ID
      *   for an element. Use $.oc.inspector.helpers.generateUniqueId() to generate an ID
      *   not associated with an element. Inspector uses the ID for storing configuration
      *   related to an element in the document DOM.
@@ -138,7 +138,7 @@
     //
 
     /**
-     * Builds the Inspector table. The markup generated by this method looks 
+     * Builds the Inspector table. The markup generated by this method looks
      * like this:
      *
      * <div>
@@ -391,7 +391,7 @@
             }
         }
     }
-    
+
     Surface.prototype.applyGroupLevelToRow = function(row, group) {
         if (row.hasAttribute('data-group-level')) {
             return
@@ -507,7 +507,7 @@
                 row.removeChild(cell)
             }
         }
-        
+
         this.editors.push(editor)
     }
 
@@ -538,7 +538,7 @@
         if (!supressChangeEvents) {
             if (this.originalValues[property] === undefined || !this.comparePropertyValues(this.originalValues[property], value)) {
                 this.markPropertyChanged(property, true)
-            } 
+            }
             else {
                 this.markPropertyChanged(property, false)
             }
@@ -563,10 +563,10 @@
 
     Surface.prototype.notifyEditorsPropertyChanged = function(propertyPath, value) {
         // Editors use this event to watch changes in properties
-        // they depend on. All editors should be notified, including 
+        // they depend on. All editors should be notified, including
         // editors in nested surfaces. The property name is passed as a
-        // path object.property (if the property is nested), so that 
-        // property depenencies could be defined as 
+        // path object.property (if the property is nested), so that
+        // property depenencies could be defined as
         // ['property', 'object.property']
 
         for (var i = 0, len = this.editors.length; i < len; i++) {
@@ -638,7 +638,7 @@
         }
 
         if ($.oc.inspector.propertyEditors[type] === undefined) {
-            throw new Error('The Inspector editor class "' + type + 
+            throw new Error('The Inspector editor class "' + type +
                 '" is not defined in the $.oc.inspector.propertyEditors namespace.')
         }
     }
@@ -688,6 +688,24 @@
         return result.join('.')
     }
 
+    Surface.prototype.findDependentProperties = function(propertyName) {
+        var dependents = []
+
+        for (var i in this.rawProperties) {
+            var property = this.rawProperties[i]
+
+            if (!property.depends) {
+                continue
+            }
+
+            if (property.depends.indexOf(propertyName) !== -1) {
+                dependents.push(property.property)
+            }
+        }
+
+        return dependents
+    }
+
     //
     // Nested surfaces support
     //
@@ -847,7 +865,7 @@
                         continue
                     }
                 }
-            } 
+            }
             else {
                 value = externalParameterEditor.getValue()
                 value = '{{ ' + value + ' }}'
@@ -952,4 +970,4 @@
     $.oc.inspector.surface = Surface
     $.oc.inspector.removedProperty = {removed: true}
     $.oc.inspector.invalidProperty = {invalid: true}
-}(window.jQuery);
\ No newline at end of file
+}(window.jQuery);
diff --git a/modules/system/classes/MediaLibrary.php b/modules/system/classes/MediaLibrary.php
index 25a401479..40808854e 100644
--- a/modules/system/classes/MediaLibrary.php
+++ b/modules/system/classes/MediaLibrary.php
@@ -596,14 +596,14 @@ class MediaLibrary
     }
 
     /**
-     * Initializes a library item from a path and item type.
-     * @param string $path Specifies the item path relative to the storage disk root.
+     * Initializes a library item from file metadata and item type.
+     * @param array $item Specifies the file metadata as returned by the storage adapter.
      * @param string $itemType Specifies the item type.
      * @return mixed Returns the MediaLibraryItem object or NULL if the item is not visible.
      */
-    protected function initLibraryItem($path, $itemType)
+    protected function initLibraryItem($item, $itemType)
     {
-        $relativePath = $this->getMediaRelativePath($path);
+        $relativePath = $this->getMediaRelativePath($item['path']);
 
         if (!$this->isVisible($relativePath)) {
             return;
@@ -613,9 +613,11 @@ class MediaLibrary
          * S3 doesn't allow getting the last modified timestamp for folders,
          * so this feature is disabled - folders timestamp is always NULL.
          */
-        $lastModified = $itemType == MediaLibraryItem::TYPE_FILE
-            ? $this->getStorageDisk()->lastModified($path)
-            : null;
+        if ($itemType === MediaLibraryItem::TYPE_FILE) {
+            $lastModified = $item['timestamp'] ?? $this->getStorageDisk()->lastModified($item['path']);
+        } else {
+            $lastModified = null;
+        }
 
         /*
          * The folder size (number of items) doesn't respect filters. That
@@ -623,9 +625,11 @@ class MediaLibrary
          * zero items for a folder that contains files not visible with a
          * currently applied filter. -ab
          */
-        $size = $itemType == MediaLibraryItem::TYPE_FILE
-            ? $this->getStorageDisk()->size($path)
-            : $this->getFolderItemCount($path);
+        if ($itemType === MediaLibraryItem::TYPE_FILE) {
+            $size = $item['size'] ?? $this->getStorageDisk()->size($item['path']);
+        } else {
+            $size = $this->getFolderItemCount($item['path']);
+        }
 
         $publicUrl = $this->getPathUrl($relativePath);
 
@@ -666,17 +670,20 @@ class MediaLibrary
             'folders' => []
         ];
 
-        $files = $this->getStorageDisk()->files($fullFolderPath);
-        foreach ($files as $file) {
-            if ($libraryItem = $this->initLibraryItem($file, MediaLibraryItem::TYPE_FILE)) {
-                $result['files'][] = $libraryItem;
-            }
-        }
+        $contents = $this->getStorageDisk()->listContents($fullFolderPath);
 
-        $folders = $this->getStorageDisk()->directories($fullFolderPath);
-        foreach ($folders as $folder) {
-            if ($libraryItem = $this->initLibraryItem($folder, MediaLibraryItem::TYPE_FOLDER)) {
-                $result['folders'][] = $libraryItem;
+        foreach ($contents as $content) {
+            if ($content['type'] === 'file') {
+                $type = MediaLibraryItem::TYPE_FILE;
+                $key = 'files';
+            } elseif ($content['type'] === 'dir') {
+                $type = MediaLibraryItem::TYPE_FOLDER;
+                $key = 'folders';
+            }
+
+            $libraryItem = $this->initLibraryItem($content, $type);
+            if (!is_null($libraryItem)) {
+                $result[$key][] = $libraryItem;
             }
         }
 
diff --git a/modules/system/classes/PluginManager.php b/modules/system/classes/PluginManager.php
index 30b91b9f4..0932a5a43 100644
--- a/modules/system/classes/PluginManager.php
+++ b/modules/system/classes/PluginManager.php
@@ -655,7 +655,9 @@ class PluginManager
 
     /**
      * Scans the system plugins to locate any dependencies that are not currently
-     * installed. Returns an array of plugin codes that are needed.
+     * installed. Returns an array of missing plugin codes keyed by the plugin that requires them.
+     *
+     *     ['Author.Plugin' => ['Required.Plugin1', 'Required.Plugin2']
      *
      *     PluginManager::instance()->findMissingDependencies();
      *
@@ -676,7 +678,7 @@ class PluginManager
                 }
 
                 if (!in_array($require, $missing)) {
-                    $missing[] = $require;
+                    $missing[$this->getIdentifier($plugin)][] = $require;
                 }
             }
         }
diff --git a/modules/system/controllers/Updates.php b/modules/system/controllers/Updates.php
index bbf461aad..ed66175d5 100644
--- a/modules/system/controllers/Updates.php
+++ b/modules/system/controllers/Updates.php
@@ -65,6 +65,8 @@ class Updates extends Controller
         if ($this->getAjaxHandler() == 'onExecuteStep') {
             $this->useSecurityToken = false;
         }
+
+        $this->vars['warnings'] = $this->getWarnings();
     }
 
     /**
@@ -227,6 +229,23 @@ class Updates extends Controller
         return $contents;
     }
 
+    protected function getWarnings()
+    {
+        $warnings = [];
+        $missingDependencies = PluginManager::instance()->findMissingDependencies();
+
+        foreach ($missingDependencies as $pluginCode => $plugin) {
+            foreach ($plugin as $missingPluginCode) {
+                $warnings[] = Lang::get('system::lang.updates.update_warnings_plugin_missing', [
+                    'code' => '<strong>' . $missingPluginCode . '</strong>',
+                    'parent_code' => '<strong>' . $pluginCode . '</strong>'
+                ]);
+            }
+        }
+
+        return $warnings;
+    }
+
     /**
      * Override for ListController behavior.
      * Modifies the CSS class for each row in the list to
diff --git a/modules/system/controllers/mailbrandsettings/index.htm b/modules/system/controllers/mailbrandsettings/index.htm
index 2e9dbfb60..c79e4ad1c 100644
--- a/modules/system/controllers/mailbrandsettings/index.htm
+++ b/modules/system/controllers/mailbrandsettings/index.htm
@@ -19,6 +19,7 @@
                     <button
                         type="submit"
                         data-request="onSave"
+                        data-request-validate
                         data-request-data="redirect:0"
                         data-hotkey="ctrl+s, cmd+s"
                         data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/system/controllers/maillayouts/create.htm b/modules/system/controllers/maillayouts/create.htm
index 3f997937b..fe0038299 100644
--- a/modules/system/controllers/maillayouts/create.htm
+++ b/modules/system/controllers/maillayouts/create.htm
@@ -18,6 +18,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating_layout')) ?>"
                     class="btn btn-primary">
@@ -26,6 +27,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating_layout')) ?>"
diff --git a/modules/system/controllers/maillayouts/update.htm b/modules/system/controllers/maillayouts/update.htm
index a0fba89c2..4bc19c56c 100644
--- a/modules/system/controllers/maillayouts/update.htm
+++ b/modules/system/controllers/maillayouts/update.htm
@@ -29,6 +29,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving_layout')) ?>"
@@ -38,6 +39,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving_layout')) ?>"
diff --git a/modules/system/controllers/mailpartials/create.htm b/modules/system/controllers/mailpartials/create.htm
index dc1e3b39a..c7ae2f4a0 100644
--- a/modules/system/controllers/mailpartials/create.htm
+++ b/modules/system/controllers/mailpartials/create.htm
@@ -18,6 +18,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating_partial')) ?>"
                     class="btn btn-primary">
@@ -26,6 +27,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating_partial')) ?>"
diff --git a/modules/system/controllers/mailpartials/update.htm b/modules/system/controllers/mailpartials/update.htm
index e33161eb7..0d7c702bd 100644
--- a/modules/system/controllers/mailpartials/update.htm
+++ b/modules/system/controllers/mailpartials/update.htm
@@ -29,6 +29,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving_layout')) ?>"
@@ -38,6 +39,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving_layout')) ?>"
diff --git a/modules/system/controllers/mailtemplates/create.htm b/modules/system/controllers/mailtemplates/create.htm
index eb3751041..b3d320dbb 100644
--- a/modules/system/controllers/mailtemplates/create.htm
+++ b/modules/system/controllers/mailtemplates/create.htm
@@ -18,6 +18,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating')) ?>"
                     class="btn btn-primary">
@@ -26,6 +27,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.creating')) ?>"
diff --git a/modules/system/controllers/mailtemplates/update.htm b/modules/system/controllers/mailtemplates/update.htm
index 77b18c626..917ce6217 100644
--- a/modules/system/controllers/mailtemplates/update.htm
+++ b/modules/system/controllers/mailtemplates/update.htm
@@ -29,6 +29,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving')) ?>"
@@ -38,6 +39,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('system::lang.mail_templates.saving')) ?>"
diff --git a/modules/system/controllers/settings/update.htm b/modules/system/controllers/settings/update.htm
index 3925c7208..7b16e9ba7 100644
--- a/modules/system/controllers/settings/update.htm
+++ b/modules/system/controllers/settings/update.htm
@@ -11,6 +11,7 @@
                 <button
                     type="submit"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="redirect:0"
                     data-hotkey="ctrl+s, cmd+s"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
@@ -20,6 +21,7 @@
                 <button
                     type="button"
                     data-request="onSave"
+                    data-request-validate
                     data-request-data="close:1"
                     data-hotkey="ctrl+enter, cmd+enter"
                     data-load-indicator="<?= e(trans('backend::lang.form.saving')) ?>"
diff --git a/modules/system/controllers/updates/index.htm b/modules/system/controllers/updates/index.htm
index 39c997d39..f59abe07c 100644
--- a/modules/system/controllers/updates/index.htm
+++ b/modules/system/controllers/updates/index.htm
@@ -47,5 +47,18 @@
         <?php endif ?>
     </div>
 </div>
-
+<?php if (count($warnings)): ?>
+    <div class="scoreboard">
+        <div class="callout fade in callout-danger no-icon">
+            <div class="header">
+                <h3><?= e(trans('system::lang.updates.update_warnings_title')) ?></h3>
+                <ul>
+                    <?php foreach ($warnings as $warning): ?>
+                        <li><?= $warning ?></li>
+                    <?php endforeach ?>
+                </ul>
+            </div>
+        </div>
+    </div>
+<?php endif ?>
 <?= $this->listRender() ?>
diff --git a/modules/system/lang/en/lang.php b/modules/system/lang/en/lang.php
index 6c57d9e68..fa55cb114 100644
--- a/modules/system/lang/en/lang.php
+++ b/modules/system/lang/en/lang.php
@@ -331,6 +331,8 @@ return [
         'core_downloading' => 'Downloading application files',
         'core_extracting' => 'Unpacking application files',
         'core_set_build' => 'Setting build number',
+        'update_warnings_title' => 'Some issues have been detected and require attention:',
+        'update_warnings_plugin_missing' => 'The :parent_code plugin requires :code to be installed before it will work',
         'changelog' => 'Changelog',
         'changelog_view_details' => 'View details',
         'plugins' => 'Plugins',
diff --git a/modules/system/lang/nl/lang.php b/modules/system/lang/nl/lang.php
index 5bd0d76cd..5697e60d5 100644
--- a/modules/system/lang/nl/lang.php
+++ b/modules/system/lang/nl/lang.php
@@ -43,6 +43,7 @@ return [
         'sv' => 'Svenska',
         'sk' => 'Slovenský',
         'sl' => 'Slovenščina',
+        'th' => 'ไทย',
         'tr' => 'Türkçe',
         'uk' => 'Українська мова',
         'zh-cn' => '简体中文',
@@ -143,8 +144,8 @@ return [
     'project' => [
         'name' => 'Project',
         'owner_label' => 'Eigenaar',
-        'attach' => 'Project koppelen',
-        'detach' => 'Project ontkoppelen',
+        'attach' => 'Koppel project',
+        'detach' => 'Ontkoppel project',
         'none' => 'Geen',
         'id' => [
             'label' => 'Project ID',
@@ -321,18 +322,19 @@ return [
         'plugin_description' => 'Omschrijving',
         'plugin_version' => 'Versie',
         'plugin_author' => 'Auteur',
-        'plugin_not_found' => 'Plugin not found',
+        'plugin_not_found' => 'Plugin niet gevonden',
+        'plugin_version_not_found' => 'Pluginversie niet gevonden',
         'core_current_build' => 'Huidige build',
         'core_view_changelog' => 'Bekijk changelog',
         'core_build' => 'Build :build',
         'core_build_help' => 'De meest recente versie is beschikbaar.',
         'core_downloading' => 'Bestanden aan het downloaden',
         'core_extracting' => 'Bestanden aan het uitpakken',
-        'core_set_build' => 'Build nummer bijwerken',
-        'changelog' => 'Changelog',
+        'core_set_build' => 'Bouwnummer bijwerken',
+        'changelog' => 'Logboek van wijzigingen',
         'changelog_view_details' => 'Bekijk details',
         'plugins' => 'Plugins',
-        'themes' => "Thema's",
+        'themes' => 'Thema\'s',
         'disabled' => 'Uitgeschakeld',
         'plugin_downloading' => 'Plugin downloaden: :name',
         'plugin_extracting' => 'Plugin uitpakken: :name',
@@ -358,8 +360,8 @@ return [
         'important_action' => [
             'empty' => 'Selecteer actie',
             'confirm' => 'Bevestig update',
-            'skip' => 'Sla deze plugin over (eenmalig)',
-            'ignore' => 'Negeer deze plugin (altijd)',
+            'skip' => 'Sla deze plugin eenmalig over',
+            'ignore' => 'Negeer deze plugin',
         ],
         'important_action_required' => 'Actie vereist!',
         'important_view_guide' => 'Toon upgrade handleiding',
diff --git a/modules/system/lang/ru/lang.php b/modules/system/lang/ru/lang.php
index 042aefbcd..3d6fffa89 100644
--- a/modules/system/lang/ru/lang.php
+++ b/modules/system/lang/ru/lang.php
@@ -265,46 +265,48 @@ return [
         'install_success'     => 'Плагин был успешно установлен.',
     ],
     'updates'        => [
-        'title'                        => 'Менеджер обновлений',
-        'name'                         => 'Обновление ПО',
-        'menu_label'                   => 'Обновления и плагины',
-        'menu_description'             => 'Обновление системы, управление и установка плагинов и тем.',
-        'return_link'                  => 'Вернуться к системе обновлений',
-        'check_label'                  => 'Проверить обновления ',
-        'retry_label'                  => 'Попробовать еще раз',
-        'plugin_name'                  => 'Название',
-        'plugin_code'                  => 'Код',
-        'plugin_description'           => 'Описание',
-        'plugin_version'               => 'Версия',
-        'plugin_author'                => 'Автор',
-        'plugin_not_found'             => 'Плагин не найден',
-        'plugin_version_not_found'     => 'Версия плагина не найдена',
-        'core_current_build'           => 'Текущая сборка',
-        'core_view_changelog'          => 'Просмотр списка изменений',
-        'core_build'                   => 'Сборка :build',
-        'core_build_help'              => 'Последняя доступная сборка.',
-        'core_downloading'             => 'Загрузка файлов приложения',
-        'core_extracting'              => 'Распаковка файлов приложения',
-        'core_set_build'               => 'Установка номера сборки',
-        'changelog'                    => 'Список изменений',
-        'changelog_view_details'       => 'Просмотр подробностей',
-        'plugins'                      => 'Плагины',
-        'themes'                       => 'Темы',
-        'disabled'                     => 'Отключено',
-        'plugin_downloading'           => 'Загрузка плагина: :name',
-        'plugin_extracting'            => 'Распаковка плагина: :name',
-        'plugin_version_none'          => 'Новый плагин',
-        'plugin_current_version'       => 'Текущая версия',
-        'theme_new_install'            => 'Новая тема установлена.',
-        'theme_downloading'            => 'Загрузка темы: :name',
-        'theme_extracting'             => 'Распаковка темы: :name',
-        'update_label'                 => 'Обновить',
-        'update_completing'            => 'Завершение процесса обновления',
-        'update_loading'               => 'Поиск доступных обновлений...',
-        'update_success'               => 'Процесс обновления был успешно завершен.',
-        'update_failed_label'          => 'Не удалось выполнить обновление',
-        'force_label'                  => 'Принудительно обновить',
-        'found'                        => [
+        'title'                          => 'Менеджер обновлений',
+        'name'                           => 'Обновление ПО',
+        'menu_label'                     => 'Обновления и плагины',
+        'menu_description'               => 'Обновление системы, управление и установка плагинов и тем.',
+        'return_link'                    => 'Вернуться к системе обновлений',
+        'check_label'                    => 'Проверить обновления ',
+        'retry_label'                    => 'Попробовать еще раз',
+        'plugin_name'                    => 'Название',
+        'plugin_code'                    => 'Код',
+        'plugin_description'             => 'Описание',
+        'plugin_version'                 => 'Версия',
+        'plugin_author'                  => 'Автор',
+        'plugin_not_found'               => 'Плагин не найден',
+        'plugin_version_not_found'       => 'Версия плагина не найдена',
+        'core_current_build'             => 'Текущая сборка',
+        'core_view_changelog'            => 'Просмотр списка изменений',
+        'core_build'                     => 'Сборка :build',
+        'core_build_help'                => 'Последняя доступная сборка.',
+        'core_downloading'               => 'Загрузка файлов приложения',
+        'core_extracting'                => 'Распаковка файлов приложения',
+        'core_set_build'                 => 'Установка номера сборки',
+        'update_warnings_title'          => 'Обнаружены проблемы требующие вашего внимания',
+        'update_warnings_plugin_missing' => 'Плагин :code ялвяется зависисмостью плагина :parent_code, но он не обнаружен в системе. Пожалуйста установите этот плагин.',
+        'changelog'                      => 'Список изменений',
+        'changelog_view_details'         => 'Просмотр подробностей',
+        'plugins'                        => 'Плагины',
+        'themes'                         => 'Темы',
+        'disabled'                       => 'Отключено',
+        'plugin_downloading'             => 'Загрузка плагина: :name',
+        'plugin_extracting'              => 'Распаковка плагина: :name',
+        'plugin_version_none'            => 'Новый плагин',
+        'plugin_current_version'         => 'Текущая версия',
+        'theme_new_install'              => 'Новая тема установлена.',
+        'theme_downloading'              => 'Загрузка темы: :name',
+        'theme_extracting'               => 'Распаковка темы: :name',
+        'update_label'                   => 'Обновить',
+        'update_completing'              => 'Завершение процесса обновления',
+        'update_loading'                 => 'Поиск доступных обновлений...',
+        'update_success'                 => 'Процесс обновления был успешно завершен.',
+        'update_failed_label'            => 'Не удалось выполнить обновление',
+        'force_label'                    => 'Принудительно обновить',
+        'found'                          => [
             'label' => 'Доступны новые обновления!',
             'help'  => 'Выберите «Обновить», чтобы начать процесс обновления.',
         ],
diff --git a/modules/system/reportwidgets/Status.php b/modules/system/reportwidgets/Status.php
index 38810d561..f09442fd2 100644
--- a/modules/system/reportwidgets/Status.php
+++ b/modules/system/reportwidgets/Status.php
@@ -81,7 +81,7 @@ class Status extends ReportWidgetBase
     {
         $warnings = [];
 
-        $missingPlugins = PluginManager::instance()->findMissingDependencies();
+        $missingDependencies = PluginManager::instance()->findMissingDependencies();
 
         $writablePaths = [
             temp_path(),
@@ -127,8 +127,13 @@ class Status extends ReportWidgetBase
             }
         }
 
-        foreach ($missingPlugins as $pluginCode) {
-            $warnings[] = Lang::get('backend::lang.warnings.plugin_missing', ['name' => '<strong>'.$pluginCode.'</strong>']);
+        foreach ($missingDependencies as $pluginCode => $plugin) {
+            foreach ($plugin as $missingPluginCode) {
+                $warnings[] = Lang::get('system::lang.updates.update_warnings_plugin_missing', [
+                    'code' => '<strong>' . $missingPluginCode . '</strong>',
+                    'parent_code' => '<strong>' . $pluginCode . '</strong>'
+                ]);
+            }
         }
 
         return $warnings;
diff --git a/tests/fixtures/media/text.txt b/tests/fixtures/media/text.txt
new file mode 100644
index 000000000..e42ff0a79
--- /dev/null
+++ b/tests/fixtures/media/text.txt
@@ -0,0 +1 @@
+THIS IS A TEXT DOCUMENT
diff --git a/tests/unit/system/classes/MediaLibraryTest.php b/tests/unit/system/classes/MediaLibraryTest.php
index 5d8082ba5..701d23401 100644
--- a/tests/unit/system/classes/MediaLibraryTest.php
+++ b/tests/unit/system/classes/MediaLibraryTest.php
@@ -4,6 +4,12 @@ use System\Classes\MediaLibrary;
 
 class MediaLibraryTest extends TestCase // @codingStandardsIgnoreLine
 {
+    protected function tearDown()
+    {
+        $this->removeMedia();
+        parent::tearDown();
+    }
+
     public function invalidPathsProvider()
     {
         return [
@@ -62,4 +68,63 @@ class MediaLibraryTest extends TestCase // @codingStandardsIgnoreLine
         $result = MediaLibrary::validatePath($path);
         $this->assertIsString($result);
     }
+
+    public function testListFolderContents()
+    {
+        $this->setUpStorage();
+        $this->copyMedia();
+
+        $contents = MediaLibrary::instance()->listFolderContents();
+        $this->assertNotEmpty($contents, 'Media library item is not discovered');
+
+        $item = reset($contents);
+        $this->assertAttributeEquals('file', 'type', $item, 'Media library item does not have the right type');
+        $this->assertAttributeEquals('/text.txt', 'path', $item, 'Media library item does not have the right path');
+        $this->assertAttributeNotEmpty('lastModified', $item, 'Media library item last modified is empty');
+        $this->assertAttributeNotEmpty('size', $item, 'Media library item size is empty');
+    }
+
+    protected function setUpStorage()
+    {
+        $this->app->useStoragePath(base_path('storage/temp'));
+
+        config(['filesystems.disks.test_local' => [
+            'driver' => 'local',
+            'root'   => storage_path('app'),
+        ]]);
+
+        config(['cms.storage.media' => [
+            'disk'   => 'test_local',
+            'folder' => 'media',
+            'path'   => '/storage/app/media',
+        ]]);
+    }
+
+    protected function copyMedia()
+    {
+        $mediaPath = storage_path('app/media');
+
+        if (!is_dir($mediaPath)) {
+            mkdir($mediaPath, 0777, true);
+        }
+
+        foreach (glob(base_path('tests/fixtures/media/*')) as $file) {
+            $path = pathinfo($file);
+            copy($file, $mediaPath . DIRECTORY_SEPARATOR . $path['basename']);
+        }
+    }
+
+    protected function removeMedia()
+    {
+        if ($this->app->storagePath() !== base_path('storage/temp')) {
+            return;
+        }
+
+        foreach (glob(storage_path('app/media/*')) as $file) {
+            unlink($file);
+        }
+
+        rmdir(storage_path('app/media'));
+        rmdir(storage_path('app'));
+    }
 }