Ability to remove settings from db

Allows to delete settings from admin-fe interface

src/lang/en.js

@@ -381,6 +381,7 @@ export default {
     file: 'File',
     update: 'Update',
     remove: 'Remove',
+    removeFromDB: 'Remove setting from the DB',
     selectLocalPack: 'Select the local pack to copy to',
     localPack: 'Local pack',
     specifyShortcode: 'Specify a custom shortcode',