Re-enabled form of setting after submit.

app/assets/javascripts/app/controllers/_settings/area_item.coffee

@@ -52,5 +52,4 @@ class App.SettingsAreaItem extends App.Controller
       value = params
     else
       value = directData
-
-    App.Setting.set(@setting['name'], value)
+    App.Setting.set(@setting['name'], value, doneLocal: => @formEnable(e))

app/assets/javascripts/app/models/setting.coffee

@@ -21,6 +21,8 @@ class App.Setting extends App.Model
             timeout: 2000
           }
         App.Setting.preferencesPost(@)
+        if options.doneLocal
+          options.doneLocal(@)
 
     if !options.fail
       options.fail = (settings, details) ->
@@ -29,6 +31,8 @@ class App.Setting extends App.Model
           msg:     App.i18n.translateContent(details.error_human || details.error || 'Unable to update object!')
           timeout: 2000
         }
+        if options.failLocal
+          options.failLocal(@)
     if setting.frontend
       App.Config.set(name, value)
     setting.save(options)