Revert changes in js used to create project select

This will preserve those changes in history, we may need them in future.
Currently we will use a issues helpers to create options to choose
project whem moving issue to it.

app/assets/javascripts/project_select.js.coffee

@@ -1,12 +1,9 @@
 class @ProjectSelect
   constructor: ->
-    $('.ajax-project-select').each (i, select) =>
+    $('.ajax-project-select').each (i, select) ->
       @groupId = $(select).data('group-id')
       @includeGroups = $(select).data('include-groups')
       @orderBy = $(select).data('order-by') || 'id'
-      @selectId = $(select).data('select-id') || 'web_url'
-      @accessLevel = $(select).data('access-level')
-      @withoutId = $(select).data('without-id')
 
       placeholder = "Search for project"
       placeholder += " or group" if @includeGroups
@@ -14,57 +11,30 @@ class @ProjectSelect
       $(select).select2
         placeholder: placeholder
         minimumInputLength: 0
-        query: (options) =>
-          if @groupId
-            Api.groupProjects @groupId, options.term, @createCallback(options)
-          else
-            Api.projects options.term, @orderBy, @createCallback(options)
+        query: (query) =>
+          finalCallback = (projects) ->
+            data = { results: projects }
+            query.callback(data)
 
-        id: (project) =>
-          project[@selectId]
+          if @includeGroups
+            projectsCallback = (projects) ->
+              groupsCallback = (groups) ->
+                data = groups.concat(projects)
+                finalCallback(data)
+
+              Api.groups query.term, false, groupsCallback
+          else
+            projectsCallback = finalCallback
+
+          if @groupId
+            Api.groupProjects @groupId, query.term, projectsCallback
+          else
+            Api.projects query.term, @orderBy, projectsCallback
+
+        id: (project) ->
+          project.web_url
 
         text: (project) ->
           project.name_with_namespace || project.name
 
         dropdownCssClass: "ajax-project-dropdown"
-
-  createCallback: (options) =>
-    finalCallback = (projects) ->
-      options.callback({ results: projects })
-
-    @withoutIdCallbackDecorator(
-      @accessLevelCallbackDecorator(
-        @groupsCallbackDecorator(
-          finalCallback
-        )
-      )
-    )
-
-  groupsCallbackDecorator: (callback) =>
-    return callback unless @includeGroups
-
-    (projects) =>
-      Api.groups options.term, false, (groups) =>
-        data = groups.concat(projects)
-        callback(data)
-
-  accessLevelCallbackDecorator: (callback) =>
-    return callback unless @accessLevel
-
-    (projects) =>
-      data = projects.filter (p) =>
-        max = Math.max(p.permissions.group_access?.access_level ? 0,
-                       p.permissions.project_access?.access_level ? 0)
-
-        max >= @accessLevel
-
-      callback(data)
-
-  withoutIdCallbackDecorator: (callback) =>
-    return callback unless @withoutId
-
-    (projects) =>
-      data = projects.filter (p) =>
-        p.id != @withoutId
-
-      callback(data)