Use Group methods for searching, fixes #4201
Whitespaces
5.0.11 RC1
Cache: don't check if the parent exists in the cache if we are already sure it does
better variable naming
webdav quota information contains the values for used and free - not total
backport of #4360
Merge pull request #4635 from owncloud/fixing-quota-stable5

Fixing quota stable5
Merge pull request #4634 from owncloud/backport-4360-stable5

Backport 4360 stable5
Merge pull request #4539 from owncloud/fix_4201

Fix 4201, Group Search in Share Dialog only half-working