diff --git a/CHANGELOG.md b/CHANGELOG.md
index 300d3f690..e2ed0d4a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 * **Build 14x** (2014-09-xx)
   - Added new `hint` form field type (see Backend > Forms docs).
+  - Added new `containerAttributes` property to form fields (see Backend > Forms docs).
 
 * **Build 145** (2014-09-13)
   - Standard setting pages now have **Save** and **Save and Close** buttons.
diff --git a/modules/backend/classes/FormField.php b/modules/backend/classes/FormField.php
index 68ae63e67..6646b71fd 100644
--- a/modules/backend/classes/FormField.php
+++ b/modules/backend/classes/FormField.php
@@ -1,6 +1,7 @@
 <?php namespace Backend\Classes;
 
 use Str;
+use HTML;
 
 /**
  * Form Field definition
@@ -237,7 +238,8 @@ class FormField
         if (isset($config['placeholder'])) $this->placeholder = $config['placeholder'];
         if (isset($config['default'])) $this->defaults = $config['default'];
         if (isset($config['cssClass'])) $this->cssClass = $config['cssClass'];
-        if (isset($config['attributes'])) $this->attributes = $config['attributes'];
+        if (isset($config['attributes'])) $this->attributes($config['attributes']);
+        if (isset($config['containerAttributes'])) $this->attributes($config['containerAttributes'], 'container');
         if (isset($config['depends'])) $this->depends = $config['depends'];
         if (isset($config['path'])) $this->path = $config['path'];
 
@@ -266,6 +268,41 @@ class FormField
         return $this;
     }
 
+    /**
+     * Sets the attributes for this field in a given position.
+     * - field: Attributes are added to the form field element (input, select, textarea, etc)
+     * - container: Attributes are added to the form field container (div.form-group)
+     * @param  array $items
+     * @param  strubg $position
+     * @return void
+     */
+    public function attributes($items, $position = 'field')
+    {
+        if (!is_array($items))
+            return;
+
+        $multiArray = array_filter($items, 'is_array');
+        if (!$multiArray) {
+            $this->attributes[$position] = $items;
+            return;
+        }
+
+        foreach ($items as $_position => $_items) {
+            $this->attributes($_items, $_position);
+        }
+    }
+
+    /**
+     * Returns the attributes for this field at a given position.
+     * @param  string $position
+     * @return array
+     */
+    public function getAttributes($position = 'field', $htmlBuild = true)
+    {
+        $result = array_get($this->attributes, $position, []);
+        return $htmlBuild ? HTML::attributes($result) : $result;
+    }
+
     /**
      * Returns a value suitable for the field name property.
      * @param  string $arrayName Specify a custom array name
diff --git a/modules/backend/formwidgets/Relation.php b/modules/backend/formwidgets/Relation.php
index 6a38dfbc2..436d45339 100644
--- a/modules/backend/formwidgets/Relation.php
+++ b/modules/backend/formwidgets/Relation.php
@@ -116,7 +116,8 @@ class Relation extends FormWidgetBase
             // by joining its pivot table. Remove all joins from the query.
             $query->getQuery()->getQuery()->joins = [];
 
-            if (in_array('October\Rain\Database\Traits\NestedTree', class_uses($relatedObj)))
+            $treeTraits = ['October\Rain\Database\Traits\NestedTree', 'October\Rain\Database\Traits\SimpleTree'];
+            if (count(array_intersect($treeTraits, class_uses($relatedObj))) > 0)
                 $field->options = $query->listsNested($this->nameFrom, $relatedObj->getKeyName());
             else
                 $field->options = $query->lists($this->nameFrom, $relatedObj->getKeyName());
diff --git a/modules/backend/widgets/form/partials/_field-container.htm b/modules/backend/widgets/form/partials/_field-container.htm
index d825e1cbb..458705560 100644
--- a/modules/backend/widgets/form/partials/_field-container.htm
+++ b/modules/backend/widgets/form/partials/_field-container.htm
@@ -2,6 +2,7 @@
     class="form-group <?= $this->previewMode ? 'form-group-preview' : '' ?> <?= $field->type ?>-field span-<?= $field->span ?> <?= $field->required?'is-required':'' ?> <?= $field->stretch?'layout-relative':'' ?> <?= $field->cssClass ?>"
     <?php if ($depends = $this->getFieldDepends($field)): ?>data-field-depends="<?= $depends ?>"<?php endif ?>
     data-field-name="<?= $field->fieldName ?>"
+    <?= $field->getAttributes('container') ?>
     id="<?= $field->getId('group') ?>">
     <?= $this->makePartial('field', ['field' => $field]) ?>
 </div>
\ No newline at end of file
diff --git a/modules/backend/widgets/form/partials/_field_balloon-selector.htm b/modules/backend/widgets/form/partials/_field_balloon-selector.htm
index 3383261e6..2fa9620c4 100644
--- a/modules/backend/widgets/form/partials/_field_balloon-selector.htm
+++ b/modules/backend/widgets/form/partials/_field_balloon-selector.htm
@@ -2,7 +2,7 @@
     $fieldOptions = $field->options();
 ?>
 <!-- Balloon selector -->
-<div data-control="balloon-selector" id="<?= $field->getId() ?>" <?= HTML::attributes($field->attributes) ?>>
+<div data-control="balloon-selector" id="<?= $field->getId() ?>" <?= $field->getAttributes() ?>>
     <ul>
         <?php foreach ($fieldOptions as $value => $text): ?>
             <li data-value="<?= e($value) ?>" class="<?= $value == $field->value ? 'active' : '' ?>"><?= e(trans($text)) ?></li>
diff --git a/modules/backend/widgets/form/partials/_field_checkbox.htm b/modules/backend/widgets/form/partials/_field_checkbox.htm
index 5b29d8eca..9880910c3 100644
--- a/modules/backend/widgets/form/partials/_field_checkbox.htm
+++ b/modules/backend/widgets/form/partials/_field_checkbox.htm
@@ -7,7 +7,7 @@
         value="1"
         <?= $this->previewMode ? 'disabled="disabled"' : '' ?>
         <?= $field->value == 1 ? 'checked="checked"' : '' ?>
-        <?= HTML::attributes($field->attributes) ?>>
+        <?= $field->getAttributes() ?>>
 
     <label for="<?= $field->getId() ?>">
         <?= e(trans($field->label)) ?>
diff --git a/modules/backend/widgets/form/partials/_field_dropdown.htm b/modules/backend/widgets/form/partials/_field_dropdown.htm
index e1b3a4f9f..4e55cfe36 100644
--- a/modules/backend/widgets/form/partials/_field_dropdown.htm
+++ b/modules/backend/widgets/form/partials/_field_dropdown.htm
@@ -9,7 +9,7 @@
         id="<?= $field->getId() ?>"
         name="<?= $field->getName() ?>"
         class="form-control custom-select"
-        <?= HTML::attributes($field->attributes) ?>>
+        <?= $field->getAttributes() ?>>
         <?php if ($field->placeholder): ?>
             <option value=""><?= e(trans($field->placeholder)) ?></option>
         <?php endif ?>
diff --git a/modules/backend/widgets/form/partials/_field_number.htm b/modules/backend/widgets/form/partials/_field_number.htm
index 9222b703f..a35e77598 100644
--- a/modules/backend/widgets/form/partials/_field_number.htm
+++ b/modules/backend/widgets/form/partials/_field_number.htm
@@ -12,6 +12,6 @@
         autocomplete="off"
         maxlength="255"
         pattern="\d+"
-        <?= HTML::attributes($field->attributes) ?>
+        <?= $field->getAttributes() ?>
     />
 <?php endif ?>
diff --git a/modules/backend/widgets/form/partials/_field_password.htm b/modules/backend/widgets/form/partials/_field_password.htm
index bca50a53c..d1b10271f 100644
--- a/modules/backend/widgets/form/partials/_field_password.htm
+++ b/modules/backend/widgets/form/partials/_field_password.htm
@@ -10,6 +10,6 @@
         class="form-control"
         autocomplete="off"
         maxlength="255"
-        <?= HTML::attributes($field->attributes) ?>
+        <?= $field->getAttributes() ?>
     />
 <?php endif ?>
\ No newline at end of file
diff --git a/modules/backend/widgets/form/partials/_field_radio.htm b/modules/backend/widgets/form/partials/_field_radio.htm
index f9f9c4e76..f0ad23b32 100644
--- a/modules/backend/widgets/form/partials/_field_radio.htm
+++ b/modules/backend/widgets/form/partials/_field_radio.htm
@@ -20,7 +20,7 @@
                 value="<?= $value ?>"
                 type="radio"
                 <?= $field->value == $value ? 'checked="checked"' : '' ?>
-                <?= HTML::attributes($field->attributes) ?>>
+                <?= $field->getAttributes() ?>>
 
             <label for="<?= $fieldId ?>">
                 <?= e(trans($option[0])) ?>
diff --git a/modules/backend/widgets/form/partials/_field_switch.htm b/modules/backend/widgets/form/partials/_field_switch.htm
index 28e8bca6d..de0d4750e 100644
--- a/modules/backend/widgets/form/partials/_field_switch.htm
+++ b/modules/backend/widgets/form/partials/_field_switch.htm
@@ -13,7 +13,7 @@
         value="1"
         <?= $this->previewMode ? 'readonly="readonly"' : '' ?>
         <?= $field->value == 1 ? 'checked="checked"' : '' ?>
-        <?= HTML::attributes($field->attributes) ?>>
+        <?= $field->getAttributes() ?>>
     <span><span><?= e(trans('backend::lang.form.field_on')) ?></span><span><?= e(trans('backend::lang.form.field_off')) ?></span></span>
     <a class="slide-button"></a>
 </label>
\ No newline at end of file
diff --git a/modules/backend/widgets/form/partials/_field_text.htm b/modules/backend/widgets/form/partials/_field_text.htm
index 04d8aefe6..c622ea8ed 100644
--- a/modules/backend/widgets/form/partials/_field_text.htm
+++ b/modules/backend/widgets/form/partials/_field_text.htm
@@ -11,6 +11,6 @@
         class="form-control"
         autocomplete="off"
         maxlength="255"
-        <?= HTML::attributes($field->attributes) ?>
+        <?= $field->getAttributes() ?>
     />
 <?php endif ?>
\ No newline at end of file
diff --git a/modules/backend/widgets/form/partials/_field_textarea.htm b/modules/backend/widgets/form/partials/_field_textarea.htm
index c82999f8e..9dea13bf4 100644
--- a/modules/backend/widgets/form/partials/_field_textarea.htm
+++ b/modules/backend/widgets/form/partials/_field_textarea.htm
@@ -8,5 +8,5 @@
         autocomplete="off"
         class="form-control field-textarea size-<?= $field->size ?>"
         placeholder="<?= e(trans($field->placeholder)) ?>"
-        <?= HTML::attributes($field->attributes) ?>><?= e($field->value) ?></textarea>
+        <?= $field->getAttributes() ?>><?= e($field->value) ?></textarea>
 <?php endif?>
\ No newline at end of file
diff --git a/modules/system/traits/AssetMaker.php b/modules/system/traits/AssetMaker.php
index d932263a6..5d404db44 100644
--- a/modules/system/traits/AssetMaker.php
+++ b/modules/system/traits/AssetMaker.php
@@ -202,6 +202,9 @@ trait AssetMaker
      */
     public function getAssetPath($fileName, $assetPath = null)
     {
+        if (preg_match("/(\/\/|http|https)/", $fileName))
+            return $fileName;
+
         if (!$assetPath)
             $assetPath = $this->assetPath;