cleanup group admin(s) on deleteGroup
delete all children's previews when deleting a folder

add phpdoc
Added script to build the JS documentation
Improved Javascript docs for JSDoc

Added namespaces so that JSDoc can find them.
Fixed a few warnings.
Improved some comments.
Testcase base class
Do not use uniqid in Group and User tests as it is not unique on windows
Test LargeFileHelperGetFileSize also with ascii only characters

And skip the UTF8 names on Windows as they are not supported
Windows does not support CHMOD, therefor we can not test not writable folders
Add \OC\App\Manager to handle enabling/disabling apps
fix touch() when $mtime is set (Google wants RFC3339) #11267

ownCloud passes us a Unix time integer, but the GDrive API wants
an RFC3339-formatted date. Actually it wants a single particular
RFC3339 format, not just anything that complies will do - it
requires the fractions to be specified, though RFC3339 doesn't.

This resolves issue #11267 (and was also noted by PVince81 in
reviewing PR #6989).
add 'namespace' for automatically created navigation divs, fixes #12080
Merge pull request #12110 from owncloud/fix-12080

add 'namespace' for automatically created navigation divs, fixes #12080
Remove debug statement

Either we throw an exception or we ignore it. But we should certainly not print this to the end-user...
Drop form_factor that is appended to JS, CSS and template filenames
Try to read the file only instead of trying to touch

The permissions are already catched properly on the installation so we just have to check whether the file is readable to prevent fatal errors from happening.

Fixes https://github.com/owncloud/core/issues/12135
Merge pull request #12126 from owncloud/remove-debug-statement

Remove debug statement
Merge pull request #12128 from owncloud/drop-formfactor

Drop form_factor that is appended to JS, CSS and template filenames
OC_DAVClient is not longer used - no need to carry it around anymore
Merge pull request #12139 from owncloud/DoNotTouchMe

Try to read the file only instead of trying to touch
Merge pull request #12087 from AdamWill/google-touch

google: fix touch() when $mtime is set (Google wants RFC3339) #11267