Merge pull request #742 from tomfulton/fix/u4-6843

Fix backoffice breaking when Actions use code in JsSource - U4-6843

src/Umbraco.Web/Editors/BackOfficeController.cs

@@ -715,7 +715,7 @@ namespace Umbraco.Web.Editors
                     if (isValid)
                     {
                         //it is a valid URL add to Url list
-                        urlList.Add(jsFile);
+                        urlList.Add(jsFile.StartsWith("~/") ? IOHelper.ResolveUrl(jsFile) : jsFile);
                     }
                 }
                 else

src/umbraco.cms/Actions/Action.cs

@@ -90,7 +90,7 @@ namespace umbraco.BusinessLogic.Actions
         {
             return ActionsResolver.Current.Actions
                 .Where(x => !string.IsNullOrWhiteSpace(x.JsSource))
-                .Select(x => IOHelper.ResolveUrl(x.JsSource)).ToList();
+                .Select(x => x.JsSource).ToList();
             //return ActionJsReference;
         }