diff --git a/modules/backend/assets/js/october-min.js b/modules/backend/assets/js/october-min.js
index 484457b85..35cc3923e 100644
--- a/modules/backend/assets/js/october-min.js
+++ b/modules/backend/assets/js/october-min.js
@@ -745,7 +745,8 @@ this.scrollbarSize=null
 this.updateScrollbarTimer=null
 this.dragOffset=null
 Base.call(this)
-this.init()}
+this.init()
+$.oc.foundation.controlUtils.markDisposable(element)}
 Scrollpad.prototype=Object.create(BaseProto)
 Scrollpad.prototype.constructor=Scrollpad
 Scrollpad.prototype.dispose=function(){this.unregisterHandlers()
@@ -771,10 +772,12 @@ this.scrollbarElement=el.querySelector('.scrollpad-scrollbar')
 this.dragHandleElement=el.querySelector('.scrollpad-scrollbar > .drag-handle')}
 Scrollpad.prototype.registerHandlers=function(){this.$el.on('mouseenter',this.proxy(this.onMouseEnter))
 this.$el.on('mouseleave',this.proxy(this.onMouseLeave))
+this.$el.one('dispose-control',this.proxy(this.dispose))
 this.scrollContentElement.addEventListener('scroll',this.proxy(this.onScroll))
 this.dragHandleElement.addEventListener('mousedown',this.proxy(this.onStartDrag))}
 Scrollpad.prototype.unregisterHandlers=function(){this.$el.off('mouseenter',this.proxy(this.onMouseEnter))
 this.$el.off('mouseleave',this.proxy(this.onMouseLeave))
+this.$el.off('dispose-control',this.proxy(this.dispose))
 this.scrollContentElement.removeEventListener('scroll',this.proxy(this.onScroll))
 this.dragHandleElement.removeEventListener('mousedown',this.proxy(this.onStartDrag))
 document.removeEventListener('mousemove',this.proxy(this.onMouseMove))
diff --git a/modules/backend/assets/js/october.scrollpad.js b/modules/backend/assets/js/october.scrollpad.js
index 338c0969f..8e2be6293 100644
--- a/modules/backend/assets/js/october.scrollpad.js
+++ b/modules/backend/assets/js/october.scrollpad.js
@@ -62,6 +62,8 @@
         //
 
         this.init()
+
+        $.oc.foundation.controlUtils.markDisposable(element)
     }
 
     Scrollpad.prototype = Object.create(BaseProto)
@@ -113,6 +115,9 @@
     Scrollpad.prototype.registerHandlers = function() {
         this.$el.on('mouseenter', this.proxy(this.onMouseEnter))
         this.$el.on('mouseleave', this.proxy(this.onMouseLeave))
+
+        this.$el.one('dispose-control', this.proxy(this.dispose))
+
         this.scrollContentElement.addEventListener('scroll', this.proxy(this.onScroll))
         this.dragHandleElement.addEventListener('mousedown', this.proxy(this.onStartDrag))
     }
@@ -120,6 +125,7 @@
     Scrollpad.prototype.unregisterHandlers = function() {
         this.$el.off('mouseenter', this.proxy(this.onMouseEnter))
         this.$el.off('mouseleave', this.proxy(this.onMouseLeave))
+        this.$el.off('dispose-control', this.proxy(this.dispose))
         this.scrollContentElement.removeEventListener('scroll', this.proxy(this.onScroll))
         this.dragHandleElement.removeEventListener('mousedown', this.proxy(this.onStartDrag))
 
diff --git a/modules/system/assets/ui/js/foundation.element.js b/modules/system/assets/ui/js/foundation.element.js
index 20b28465f..fd5fba037 100644
--- a/modules/system/assets/ui/js/foundation.element.js
+++ b/modules/system/assets/ui/js/foundation.element.js
@@ -131,6 +131,15 @@
                     input = null
                 }, 0)
             }
+        },
+
+        elementContainsPoint: function(element, point) {
+            var elementPosition = $.oc.foundation.element.absolutePosition(element),
+                elementRight = elementPosition.left + element.offsetWidth,
+                elementBottom = elementPosition.top + element.offsetHeight
+
+            return point.x >= elementPosition.left && point.x <= elementRight 
+                    && point.y >= elementPosition.top && point.y <= elementBottom
         }
     }
 
diff --git a/modules/system/assets/ui/js/list.sortable.js b/modules/system/assets/ui/js/list.sortable.js
new file mode 100644
index 000000000..ed0e91865
--- /dev/null
+++ b/modules/system/assets/ui/js/list.sortable.js
@@ -0,0 +1,461 @@
+/*
+ * Sortable plugin.
+ * 
+ * Status: experimental. The behavior is not perfect, but it's OK in terms of memory
+ * usage and disposing.
+ *
+ * This is a lightweight, October-style implementation of the drag & drop sorting
+ * functionality. The plugin uses only HTML5 Drag&Drop feature and completely
+ * disposable.
+ *
+ * During the dragging the plugin creates a placeholder element, which should be 
+ * styled separately.
+ *
+ * Draggable elements should be marked with "draggable" HTML5 attribute.
+ *
+ * Current / planned features:
+ *
+ * [x] Sorting a single list.
+ * [ ] Dragging items between multiple lists.
+ * [ ] Sorting nested lists.
+ 
+ * JAVASCRIPT API
+ *
+ * $('#list').listSortable({})
+ *
+ * DATA ATTRIBUTES API
+ *
+ * In the simplest case the plugin can be initialized like this:
+ * <ul data-control="list-sortable">
+ *     <li draggable="true">...</li>
+ *
+ * Multiple lists will not support this option and the plugin should be created 
+ * and updated by a caller code.
+ *
+ * Options:
+ * - handle: optional selector for a drag handle element. Also available as data-handle attribute.
+ * - direction: direction of the list - horizontal or vertical. Also available as data-direction attribute. Default is vertical.
+ *
+ * Events:
+ * - dragged.list.sortable - triggered on a list element after it was moved
+ */
+
++function ($) { "use strict";
+    var Base = $.oc.foundation.base,
+        BaseProto = Base.prototype,
+        listSortableIdCounter = 0,
+        elementsIdCounter = 0
+
+    var ListSortable = function (element, options) {
+        this.lists = []
+        this.options = options
+        this.listSortableId = null
+        this.lastMousePosition = null
+
+        Base.call(this)
+
+        $.oc.foundation.controlUtils.markDisposable(element)
+        this.init()
+
+        this.addList(element)
+    }
+
+    ListSortable.prototype = Object.create(BaseProto)
+    ListSortable.prototype.constructor = ListSortable
+
+    ListSortable.prototype.init = function () {
+        listSortableIdCounter++
+
+        this.listSortableId = 'listsortable/id/' + listSortableIdCounter
+    }
+
+    ListSortable.prototype.addList = function(list) {
+        this.lists.push(list)
+        this.registerListHandlers(list)
+
+        if (this.lists.length == 1) {
+            $(list).one('dispose-control', this.proxy(this.dispose))
+        }
+    }
+
+    //
+    // Event management
+    //
+
+    ListSortable.prototype.registerListHandlers = function(list) {
+        var $list = $(list)
+
+        $list.on('dragstart', '> li', this.proxy(this.onDragStart))
+        $list.on('dragover', '> li', this.proxy(this.onDragOver))
+        $list.on('dragenter', '> li', this.proxy(this.onDragEnter))
+        $list.on('dragleave', '> li', this.proxy(this.onDragLeave))
+        $list.on('drop', '> li', this.proxy(this.onDragDrop))
+        $list.on('dragend', '> li', this.proxy(this.onDragEnd))
+    }
+
+    ListSortable.prototype.unregisterListHandlers = function(list) {
+        $list.off('dragstart', '> li', this.proxy(this.onDragStart))
+        $list.off('dragover', '> li', this.proxy(this.onDragOver))
+        $list.off('dragenter', '> li', this.proxy(this.onDragEnter))
+        $list.off('dragleave', '> li', this.proxy(this.onDragLeave))
+        $list.off('drop', '> li', this.proxy(this.onDragDrop))
+        $list.off('dragend', '> li', this.proxy(this.onDragEnd))
+    }
+
+    ListSortable.prototype.unregisterHandlers = function() {
+        $(document).off('dragover', this.proxy(this.onDocumentDragOver))
+        $(document).off('mousemove', this.proxy(this.onDocumentMouseMove))
+        $(this.lists[0]).off('dispose-control', this.proxy(this.dispose))
+    }
+
+    //
+    // Disposing
+    //
+
+    ListSortable.prototype.unbindLists = function() {
+        for (var i=this.lists.length-1; i>0; i--) {
+            var list = this.lists[i]
+
+            this.unregisterListHandlers(this.lists[i])
+            $(list).removeData('oc.listSortable')
+        }
+    }
+
+    ListSortable.prototype.dispose = function() {
+        this.unbindLists()
+        this.unregisterHandlers()
+
+        this.options = null
+        this.lists = []
+
+        BaseProto.dispose.call(this)
+    }
+
+    //
+    // Internal helpers
+    //
+
+    ListSortable.prototype.elementBelongsToManagedList = function(element) {
+        for (var i=this.lists.length-1; i >= 0; i--) {
+            var list = this.lists[i],
+                children = [].slice.call(list.children) // Converts HTMLCollection to array
+
+            if (children.indexOf(element) !== -1) {
+                return true
+            }
+        }
+
+        return false
+    }
+
+    ListSortable.prototype.isDragStartAllowed = function(element) {
+        // TODO: if handle selector is specified - test if 
+        // the element is a handle.
+
+        return true
+    }
+
+    ListSortable.prototype.elementIsPlaceholder = function(element) {
+        return element.getAttribute('class') === 'list-sortable-placeholder'
+    }
+
+    ListSortable.prototype.getElementSortableId = function(element) {
+        if (element.hasAttribute('data-list-sortable-element-id')) {
+            return element.getAttribute('data-list-sortable-element-id')
+        }
+
+        elementsIdCounter++
+        var elementId = elementsIdCounter
+
+        element.setAttribute('data-list-sortable-element-id', elementsIdCounter)
+
+        return elementsIdCounter
+    }
+
+    ListSortable.prototype.dataTransferContains = function(ev, element) {
+        if (ev.dataTransfer.types.indexOf !== undefined){
+            return ev.dataTransfer.types.indexOf(element) >= 0
+        }
+
+        return ev.dataTransfer.types.contains(element)
+    }
+
+    ListSortable.prototype.isSourceManagedList = function(ev) {
+        return this.dataTransferContains(ev, this.listSortableId)
+    }
+
+    ListSortable.prototype.removePlaceholders = function() {
+        for (var i=this.lists.length-1; i >= 0; i--) {
+            var list = this.lists[i], 
+                placeholders = list.querySelectorAll('.list-sortable-placeholder')
+
+            for (var j=placeholders.length-1; j >= 0; j--) {
+                list.removeChild(placeholders[j])
+            }
+        }
+    }
+
+    ListSortable.prototype.createPlaceholder = function(element, ev) {
+        var placeholder = document.createElement('li'),
+            placement = this.getPlaceholderPlacement(element, ev)
+
+        this.removePlaceholders()
+
+        placeholder.setAttribute('class', 'list-sortable-placeholder')
+        placeholder.setAttribute('draggable', true)
+
+        if (placement == 'before') {
+            element.parentNode.insertBefore(placeholder, element)
+        }
+        else {
+            element.parentNode.insertBefore(placeholder, element.nextSibling)
+        }
+    }
+
+    ListSortable.prototype.moveElement = function(target, ev) {
+        var list = target.parentNode,
+            placeholder = list.querySelector('.list-sortable-placeholder')
+
+        if (!placeholder) {
+            return
+        }
+
+        var elementId = ev.dataTransfer.getData('listsortable/elementid')
+        if (!elementId) {
+            return
+        }
+
+        var item = this.findDraggedItem(elementId)
+        if (!item) {
+            return
+        }
+
+        placeholder.parentNode.insertBefore(item, placeholder)
+        $(item).trigger('dragged.list.sortable')
+    }
+
+    ListSortable.prototype.findDraggedItem = function(elementId) {
+        for (var i=this.lists.length-1; i >= 0; i--) {
+            var list = this.lists[i],
+                item = list.querySelector('[data-list-sortable-element-id="'+elementId+'"]')
+
+            if (item) {
+                return item
+            }
+        }
+
+        return null
+    }
+
+    ListSortable.prototype.getPlaceholderPlacement = function(hoverElement, ev) {
+        var mousePosition = $.oc.foundation.event.pageCoordinates(ev),
+            elementPosition = $.oc.foundation.element.absolutePosition(hoverElement)
+
+        if (this.options.direction == 'vertical') {
+            var elementCenter = elementPosition.top + hoverElement.offsetHeight/2
+
+            return mousePosition.y <= elementCenter ? 'before' : 'after'
+        }
+        else {
+            var elementCenter = elementPosition.left + hoverElement.offsetWidth/2
+
+            return mousePosition.x <= elementCenter ? 'before' : 'after'
+        }
+    }
+
+    ListSortable.prototype.lastMousePositionChanged = function(ev) {
+        var mousePosition = $.oc.foundation.event.pageCoordinates(ev.originalEvent)
+
+        if (this.lastMousePosition === null || this.lastMousePosition.x != mousePosition.x || this.lastMousePosition.y != mousePosition.y) {
+            this.lastMousePosition = mousePosition
+            return true
+        }
+
+        return false
+    }
+
+    ListSortable.prototype.mouseOutsideLists = function(ev) {
+        var mousePosition = $.oc.foundation.event.pageCoordinates(ev)
+
+        for (var i=this.lists.length-1; i >= 0; i--) {
+            if ($.oc.foundation.element.elementContainsPoint(this.lists[i], mousePosition)) {
+                return false
+            }
+        }
+
+        return true
+    }
+
+    ListSortable.prototype.getClosestDraggableParent = function(element) {
+        var current = element
+
+        while (current) {
+            if (current.tagName === 'LI' && current.hasAttribute('draggable') ) {
+                return current
+            }
+
+            current = current.parentNode
+        }
+
+        return null
+    }
+
+    // EVENT HANDLERS
+    // ============================
+
+    ListSortable.prototype.onDragStart = function(ev) {
+        if (!this.isDragStartAllowed(ev.target)) {
+            return
+        }
+
+        ev.originalEvent.dataTransfer.effectAllowed = 'move'
+        ev.originalEvent.dataTransfer.setData('listsortable/elementid', this.getElementSortableId(ev.target))
+        ev.originalEvent.dataTransfer.setData(this.listSortableId, this.listSortableId)
+
+        // The mousemove handler is used to remove the placeholder
+        // when the drag is canceled with Escape button. We can't use
+        // the dragend for removing the placeholders because dragend
+        // is triggered before drop, but we need placeholder to exists
+        // in the drop handler.
+        // 
+        // Mouse events are suppressed during the drag and drop operations,
+        // so we only need to handle it once (but we still must the handler 
+        // explicitly).
+        $(document).on('mousemove', this.proxy(this.onDocumentMouseMove))
+
+        // The dragover handler is used to hide the placeholder when
+        // the mouse is outside of any known list.
+        $(document).on('dragover', this.proxy(this.onDocumentDragOver))
+    }
+
+    ListSortable.prototype.onDragOver = function(ev) {
+        if (!this.isSourceManagedList(ev.originalEvent)) {
+            return
+        }
+
+        var draggable = this.getClosestDraggableParent(ev.target)
+        if (!draggable) {
+            return
+        }
+
+        if (!this.elementIsPlaceholder(draggable) && this.lastMousePositionChanged(ev)) {
+            this.createPlaceholder(draggable, ev.originalEvent)
+        }
+
+        ev.stopPropagation()
+        ev.preventDefault()
+        ev.originalEvent.dataTransfer.dropEffect = 'move'
+    }
+
+    ListSortable.prototype.onDragEnter = function(ev) {
+        if (!this.isSourceManagedList(ev.originalEvent)) {
+            return
+        }
+
+        var draggable = this.getClosestDraggableParent(ev.target)
+        if (!draggable) {
+            return
+        }
+
+        if (this.elementIsPlaceholder(draggable)) {
+            return
+        }
+
+        this.createPlaceholder(draggable, ev.originalEvent)
+        ev.stopPropagation()
+        ev.preventDefault()
+    }
+
+    ListSortable.prototype.onDragLeave = function(ev) {
+        if (!this.isSourceManagedList(ev.originalEvent)) {
+            return
+        }
+
+        ev.stopPropagation()
+        ev.preventDefault()
+    }
+
+    ListSortable.prototype.onDragDrop = function(ev) {
+        if (!this.isSourceManagedList(ev.originalEvent)) {
+            return
+        }
+
+        var draggable = this.getClosestDraggableParent(ev.target)
+        if (!draggable) {
+            return
+        }
+
+        this.moveElement(draggable, ev.originalEvent)
+
+        this.removePlaceholders()
+    }
+
+    ListSortable.prototype.onDragEnd = function(ev) {
+        $(document).off('dragover', this.proxy(this.onDocumentDragOver))
+    }
+
+    ListSortable.prototype.onDocumentDragOver = function(ev) {
+        if (!this.isSourceManagedList(ev.originalEvent)) {
+            return
+        }
+
+        if (this.mouseOutsideLists(ev.originalEvent)) {
+            this.removePlaceholders()
+            return
+        }
+    }
+
+    ListSortable.prototype.onDocumentMouseMove = function(ev) {
+        $(document).off('mousemove', this.proxy(this.onDocumentMouseMove))
+        this.removePlaceholders()
+    }
+
+
+    // PLUGIN DEFINITION
+    // ============================
+
+    ListSortable.DEFAULTS = {
+        handle: null,
+        direction: 'vertical'
+    }
+
+    var old = $.fn.listSortable
+
+    $.fn.listSortable = function (option) {
+        var args = arguments
+
+        return this.each(function () {
+            var $this = $(this),
+                data  = $this.data('oc.listSortable'),
+                options = $.extend({}, ListSortable.DEFAULTS, $this.data(), typeof option == 'object' && option)
+
+            if (!data) {
+                $this.data('oc.listSortable', (data = new ListSortable(this, options)))
+            }
+
+            if (typeof option == 'string' && data) { 
+                if (data[option]) {
+                    var methodArguments = Array.prototype.slice.call(args) // Clone the arguments array
+                    methodArguments.shift()
+
+                    data[option].apply(data, methodArguments)
+                }
+            }
+        })
+      }
+
+    $.fn.listSortable.Constructor = ListSortable
+
+    // LISTSORTABLE NO CONFLICT
+    // =================
+
+    $.fn.listSortable.noConflict = function () {
+        $.fn.listSortable = old
+        return this
+    }
+
+    $(document).render(function(){
+        $('[data-control=list-sortable]').listSortable()
+    })
+
+}(window.jQuery);
\ No newline at end of file
diff --git a/modules/system/assets/ui/storm-min.js b/modules/system/assets/ui/storm-min.js
index 6c7ca724e..6976f7cad 100644
--- a/modules/system/assets/ui/storm-min.js
+++ b/modules/system/assets/ui/storm-min.js
@@ -1864,7 +1864,8 @@ range=null
 input=null},0)}
 if(input.selectionStart!==undefined){setTimeout(function(){input.selectionStart=position
 input.selectionEnd=position
-input=null},0)}}}
+input=null},0)}},elementContainsPoint:function(element,point){var elementPosition=$.oc.foundation.element.absolutePosition(element),elementRight=elementPosition.left+element.offsetWidth,elementBottom=elementPosition.top+element.offsetHeight
+return point.x>=elementPosition.left&&point.x<=elementRight&&point.y>=elementPosition.top&&point.y<=elementBottom}}
 $.oc.foundation.element=Element;}(window.jQuery);+function($){"use strict";if($.oc===undefined)
 $.oc={}
 if($.oc.foundation===undefined)
@@ -5271,4 +5272,137 @@ ExternalParameterEditor.prototype.getContainer=function(){return this.containerC
 ExternalParameterEditor.prototype.getEditor=function(){return this.containerCell.querySelector('div.external-editor')}
 ExternalParameterEditor.prototype.getPropertyName=function(){return this.propertyDefinition.property}
 ExternalParameterEditor.prototype.isEditorVisible=function(){return $.oc.foundation.element.hasClass(this.getContainer(),'editor-visible')}
-$.oc.inspector.externalParameterEditor=ExternalParameterEditor}(window.jQuery);
\ No newline at end of file
+$.oc.inspector.externalParameterEditor=ExternalParameterEditor}(window.jQuery);+function($){"use strict";var Base=$.oc.foundation.base,BaseProto=Base.prototype,listSortableIdCounter=0,elementsIdCounter=0
+var ListSortable=function(element,options){this.lists=[]
+this.options=options
+this.listSortableId=null
+this.lastMousePosition=null
+Base.call(this)
+$.oc.foundation.controlUtils.markDisposable(element)
+this.init()
+this.addList(element)}
+ListSortable.prototype=Object.create(BaseProto)
+ListSortable.prototype.constructor=ListSortable
+ListSortable.prototype.init=function(){listSortableIdCounter++
+this.listSortableId='listsortable/id/'+listSortableIdCounter}
+ListSortable.prototype.addList=function(list){this.lists.push(list)
+this.registerListHandlers(list)
+if(this.lists.length==1){$(list).one('dispose-control',this.proxy(this.dispose))}}
+ListSortable.prototype.registerListHandlers=function(list){var $list=$(list)
+$list.on('dragstart','> li',this.proxy(this.onDragStart))
+$list.on('dragover','> li',this.proxy(this.onDragOver))
+$list.on('dragenter','> li',this.proxy(this.onDragEnter))
+$list.on('dragleave','> li',this.proxy(this.onDragLeave))
+$list.on('drop','> li',this.proxy(this.onDragDrop))
+$list.on('dragend','> li',this.proxy(this.onDragEnd))}
+ListSortable.prototype.unregisterListHandlers=function(list){$list.off('dragstart','> li',this.proxy(this.onDragStart))
+$list.off('dragover','> li',this.proxy(this.onDragOver))
+$list.off('dragenter','> li',this.proxy(this.onDragEnter))
+$list.off('dragleave','> li',this.proxy(this.onDragLeave))
+$list.off('drop','> li',this.proxy(this.onDragDrop))
+$list.off('dragend','> li',this.proxy(this.onDragEnd))}
+ListSortable.prototype.unregisterHandlers=function(){$(document).off('dragover',this.proxy(this.onDocumentDragOver))
+$(document).off('mousemove',this.proxy(this.onDocumentMouseMove))
+$(this.lists[0]).off('dispose-control',this.proxy(this.dispose))}
+ListSortable.prototype.unbindLists=function(){for(var i=this.lists.length-1;i>0;i--){var list=this.lists[i]
+this.unregisterListHandlers(this.lists[i])
+$(list).removeData('oc.listSortable')}}
+ListSortable.prototype.dispose=function(){this.unbindLists()
+this.unregisterHandlers()
+this.options=null
+this.lists=[]
+BaseProto.dispose.call(this)}
+ListSortable.prototype.elementBelongsToManagedList=function(element){for(var i=this.lists.length-1;i>=0;i--){var list=this.lists[i],children=[].slice.call(list.children)
+if(children.indexOf(element)!==-1){return true}}
+return false}
+ListSortable.prototype.isDragStartAllowed=function(element){return true}
+ListSortable.prototype.elementIsPlaceholder=function(element){return element.getAttribute('class')==='list-sortable-placeholder'}
+ListSortable.prototype.getElementSortableId=function(element){if(element.hasAttribute('data-list-sortable-element-id')){return element.getAttribute('data-list-sortable-element-id')}
+elementsIdCounter++
+var elementId=elementsIdCounter
+element.setAttribute('data-list-sortable-element-id',elementsIdCounter)
+return elementsIdCounter}
+ListSortable.prototype.dataTransferContains=function(ev,element){if(ev.dataTransfer.types.indexOf!==undefined){return ev.dataTransfer.types.indexOf(element)>=0}
+return ev.dataTransfer.types.contains(element)}
+ListSortable.prototype.isSourceManagedList=function(ev){return this.dataTransferContains(ev,this.listSortableId)}
+ListSortable.prototype.removePlaceholders=function(){for(var i=this.lists.length-1;i>=0;i--){var list=this.lists[i],placeholders=list.querySelectorAll('.list-sortable-placeholder')
+for(var j=placeholders.length-1;j>=0;j--){list.removeChild(placeholders[j])}}}
+ListSortable.prototype.createPlaceholder=function(element,ev){var placeholder=document.createElement('li'),placement=this.getPlaceholderPlacement(element,ev)
+this.removePlaceholders()
+placeholder.setAttribute('class','list-sortable-placeholder')
+placeholder.setAttribute('draggable',true)
+if(placement=='before'){element.parentNode.insertBefore(placeholder,element)}
+else{element.parentNode.insertBefore(placeholder,element.nextSibling)}}
+ListSortable.prototype.moveElement=function(target,ev){var list=target.parentNode,placeholder=list.querySelector('.list-sortable-placeholder')
+if(!placeholder){return}
+var elementId=ev.dataTransfer.getData('listsortable/elementid')
+if(!elementId){return}
+var item=this.findDraggedItem(elementId)
+if(!item){return}
+placeholder.parentNode.insertBefore(item,placeholder)
+$(item).trigger('dragged.list.sortable')}
+ListSortable.prototype.findDraggedItem=function(elementId){for(var i=this.lists.length-1;i>=0;i--){var list=this.lists[i],item=list.querySelector('[data-list-sortable-element-id="'+elementId+'"]')
+if(item){return item}}
+return null}
+ListSortable.prototype.getPlaceholderPlacement=function(hoverElement,ev){var mousePosition=$.oc.foundation.event.pageCoordinates(ev),elementPosition=$.oc.foundation.element.absolutePosition(hoverElement)
+if(this.options.direction=='vertical'){var elementCenter=elementPosition.top+hoverElement.offsetHeight/2
+return mousePosition.y<=elementCenter?'before':'after'}
+else{var elementCenter=elementPosition.left+hoverElement.offsetWidth/2
+return mousePosition.x<=elementCenter?'before':'after'}}
+ListSortable.prototype.lastMousePositionChanged=function(ev){var mousePosition=$.oc.foundation.event.pageCoordinates(ev.originalEvent)
+if(this.lastMousePosition===null||this.lastMousePosition.x!=mousePosition.x||this.lastMousePosition.y!=mousePosition.y){this.lastMousePosition=mousePosition
+return true}
+return false}
+ListSortable.prototype.mouseOutsideLists=function(ev){var mousePosition=$.oc.foundation.event.pageCoordinates(ev)
+for(var i=this.lists.length-1;i>=0;i--){if($.oc.foundation.element.elementContainsPoint(this.lists[i],mousePosition)){return false}}
+return true}
+ListSortable.prototype.getClosestDraggableParent=function(element){var current=element
+while(current){if(current.tagName==='LI'&&current.hasAttribute('draggable')){return current}
+current=current.parentNode}
+return null}
+ListSortable.prototype.onDragStart=function(ev){if(!this.isDragStartAllowed(ev.target)){return}
+ev.originalEvent.dataTransfer.effectAllowed='move'
+ev.originalEvent.dataTransfer.setData('listsortable/elementid',this.getElementSortableId(ev.target))
+ev.originalEvent.dataTransfer.setData(this.listSortableId,this.listSortableId)
+$(document).on('mousemove',this.proxy(this.onDocumentMouseMove))
+$(document).on('dragover',this.proxy(this.onDocumentDragOver))}
+ListSortable.prototype.onDragOver=function(ev){if(!this.isSourceManagedList(ev.originalEvent)){return}
+var draggable=this.getClosestDraggableParent(ev.target)
+if(!draggable){return}
+if(!this.elementIsPlaceholder(draggable)&&this.lastMousePositionChanged(ev)){this.createPlaceholder(draggable,ev.originalEvent)}
+ev.stopPropagation()
+ev.preventDefault()
+ev.originalEvent.dataTransfer.dropEffect='move'}
+ListSortable.prototype.onDragEnter=function(ev){if(!this.isSourceManagedList(ev.originalEvent)){return}
+var draggable=this.getClosestDraggableParent(ev.target)
+if(!draggable){return}
+if(this.elementIsPlaceholder(draggable)){return}
+this.createPlaceholder(draggable,ev.originalEvent)
+ev.stopPropagation()
+ev.preventDefault()}
+ListSortable.prototype.onDragLeave=function(ev){if(!this.isSourceManagedList(ev.originalEvent)){return}
+ev.stopPropagation()
+ev.preventDefault()}
+ListSortable.prototype.onDragDrop=function(ev){if(!this.isSourceManagedList(ev.originalEvent)){return}
+var draggable=this.getClosestDraggableParent(ev.target)
+if(!draggable){return}
+this.moveElement(draggable,ev.originalEvent)
+this.removePlaceholders()}
+ListSortable.prototype.onDragEnd=function(ev){$(document).off('dragover',this.proxy(this.onDocumentDragOver))}
+ListSortable.prototype.onDocumentDragOver=function(ev){if(!this.isSourceManagedList(ev.originalEvent)){return}
+if(this.mouseOutsideLists(ev.originalEvent)){this.removePlaceholders()
+return}}
+ListSortable.prototype.onDocumentMouseMove=function(ev){$(document).off('mousemove',this.proxy(this.onDocumentMouseMove))
+this.removePlaceholders()}
+ListSortable.DEFAULTS={handle:null,direction:'vertical'}
+var old=$.fn.listSortable
+$.fn.listSortable=function(option){var args=arguments
+return this.each(function(){var $this=$(this),data=$this.data('oc.listSortable'),options=$.extend({},ListSortable.DEFAULTS,$this.data(),typeof option=='object'&&option)
+if(!data){$this.data('oc.listSortable',(data=new ListSortable(this,options)))}
+if(typeof option=='string'&&data){if(data[option]){var methodArguments=Array.prototype.slice.call(args)
+methodArguments.shift()
+data[option].apply(data,methodArguments)}}})}
+$.fn.listSortable.Constructor=ListSortable
+$.fn.listSortable.noConflict=function(){$.fn.listSortable=old
+return this}
+$(document).render(function(){$('[data-control=list-sortable]').listSortable()})}(window.jQuery);
\ No newline at end of file
diff --git a/modules/system/assets/ui/storm.js b/modules/system/assets/ui/storm.js
index a21ef561a..8c8ed3866 100644
--- a/modules/system/assets/ui/storm.js
+++ b/modules/system/assets/ui/storm.js
@@ -80,4 +80,5 @@
 =require js/inspector.validator.float.js
 =require js/inspector.validator.length.js
 =require js/inspector.externalparametereditor.js
+=require js/list.sortable.js
 */