don´t show negative numbers. this is only a quickfix. I still dont get why the Shared folder can be bigger than the root folder. Perhaps a inconsitency in the filecache?

respect coding style

respect coding style

Conflicts:
	settings/personal.php

Conflicts:
	settings/personal.php

Changed multiple select for days of weekend to 'chosen'. Cleaned up some code. Removed success message when changing timezone.

Normally a browser window will be large enough that the bar is wider
than 100px so we can use decimals to display the real usage more
closely.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

Created the following function:
 - checkLoggedIn
 - checkAdminUser
 - redirectToDefaultPage