Adds basic permissions for media manager - Fixes #1134

Note if media management is restricted, it can still be accessed via the Rich Editor - we need to address this concern later. This change is to allow the menu item to be toggled on/off.

modules/cms/ServiceProvider.php

@@ -143,7 +143,7 @@ class ServiceProvider extends ModuleServiceProvider
                     'label'       => 'cms::lang.media.menu_label',
                     'icon'        => 'icon-folder',
                     'url'         => Backend::url('cms/media'),
-                    'permissions' => ['cms.*'],
+                    'permissions' => ['media.*'],
                     'order'       => 20
                 ]
             ]);
@@ -186,6 +186,11 @@ class ServiceProvider extends ModuleServiceProvider
                     'label' => 'cms::lang.permissions.manage_themes',
                     'tab' => 'cms::lang.permissions.name',
                     'order' => 100
+                ],
+                'media.manage_media' => [
+                    'label' => 'cms::lang.permissions.manage_media',
+                    'tab' => 'cms::lang.permissions.name',
+                    'order' => 100
                 ]
             ]);
         });

modules/cms/controllers/Media.php

@@ -12,7 +12,7 @@ use Cms\Widgets\MediaManager;
  */
 class Media extends Controller
 {
-    public $requiredPermissions = ['cms.*'];
+    public $requiredPermissions = ['media.*'];
 
     /**
      * Constructor.

modules/cms/lang/en/lang.php

@@ -231,7 +231,8 @@ return [
         'manage_pages' => 'Manage pages',
         'manage_layouts' => 'Manage layouts',
         'manage_partials' => 'Manage partials',
-        'manage_themes' => 'Manage themes'
+        'manage_themes' => 'Manage themes',
+        'manage_media' => 'Manage media'
     ],
     'mediafinder' => [
         'default_prompt' => 'Click the %s button to find a media item'