Fix lost ETag on Cache Upgrade
Performance: prepare queries only once
Upgrade FileCache on ownCloud upgrade for all users with files
Remove Debug output
Change LIMIT in DB query respectively remove where not necessary
Add Index to properties table for better performance on upgrade
Port Icewind's fix I
Cache: fix property path for getting legacy etag
Adjust to Icewind's fix
Add PHPDoc
Only prepare an SQL statement once.
Cache: Do not overwrite ETag when file did not change
Cache: on equal mtime also for equal size before keeping ETag, at least makes Unit Test happy
Users: use DisplayName in the Display Name col when appending users
Files External: show display names instead of internal user names in Settings UI
No Scrolling for more than approximately 10 Applications
Fixed typo
Merge pull request #2599 from owncloud/backport-2515-nav-scrollbar

Backport 2515 nav scrollbar
Merge pull request #2593 from owncloud/fix_userlist_append_displayname

Users: use DisplayName in the Display Name col when appending users
Merge pull request #2596 from owncloud/fix_files_external_displayname

Files External: show display names instead of internal user names in Set...