add utf8 folder test
Fix upgrade process when apps enabled for specific groups

Fix issue where the currently logged user was causing side-effects when
upgrading.
Now setting incognito mode (no user) on update to make sure the whole
apps list is taken into account with getEnabledApps() or isEnabled().
Added test for needUpgrade for core
Added unit tests for cache of enabled apps
Solve bug with touch always return true on /lib/private/files/view.php
Fix code with previous comments
Reset changes on 3rdparty submodule
Solve bug with touch always return true on /lib/private/files/view.php
Fix code with previous comments
Merge branch 'issue_10674' of github.com:owncloud/core into issue_10674
Typ in whichOpenOffice test
Merge pull request #10244 from owncloud/utf8-folder-test

add utf8 folder test
Merge pull request #10818 from owncloud/enableappforgroupfix

Fix upgrade process when apps enabled for specific groups
Merge pull request #10840 from owncloud/issue_10674

Solve bug with touch always return true on /lib/private/files/view.php
Fix 3rdparty pointer
[tx-robot] updated from transifex
Merge pull request #10871 from owncloud/issue_10674

Fix 3rdparty pointer