xF1 Add-on [XFA] Default Editor Format 1.1.0

Corrected bugs:

• ErrorException: Undefined variable: user - library/XFA/DefaultEditorFormat/Extends/ControllerPublic/Account.php
• ErrorException: Undefined index: xfa_dedf_params - library/XenForo/Visitor.php:678
• Button to set default format not displayed when editor isn't empty

New features:

• New editor button to set default editor formatting options directly from a dialog opened in the editor.