Improved settings level integration into confluence

With the help of @ronie this is another attempt at getting rid of the sidebar in the settings window in confluence.
With this we always add a "Reset above settings to default" button at the end of the settings list. Furthermore the settings level switch has been moved to the bottom of the category list.
You can see an example screenshot here: http://i687.photobucket.com/albums/vv237/roniez/workz/settingslevels.jpg