1)Tabs for the Properties Panel(E.g. Design / Settings etc.)
2)"Admin Settings" Panel so that the admin can from the properties panel click a button
and then a "settings page" would appear (like on the screenshot atached if you click
Manage Store a "lightbox" opens with the store options.
This settings page would be editable through the wix App creator(much like Dashboard Pages that we have now for site data)