calculate versions size per user
calculate trashbin size per user
increase db fileds for usernames
use the same string lengths like the file cache
Merge branch 'master' into update-expire-function

Conflicts:
	apps/files_trashbin/lib/trash.php
Merge branch 'master' into update-expire-function

Conflicts:
	apps/files_trashbin/appinfo/version
	apps/files_trashbin/lib/trash.php
fix line endings
Merge pull request #1823 from owncloud/update-expire-function

Update expire function