Inject config into checkserver and cleanup tests
Don't complain about non-writable datadirs before we're installed
Check for writable datadir during setup
Don't test for htaccess if we cant write into the datadir anyway
Show login again instead of JSON if CSRF check fails

Previously a JSON error page was shown to the user in-case the CSRF token was not valid. This was confusing and prevented people from login.

With this at least the login page is shown again and not a JSON error message. I consider this as sufficient since adding a new error page just for this sake would uneededly make lib/base.php even more cluttered and this is a edge-case which optimally should anyways not happen that often.

This can be tested by opening the login page, then clearing the cookies, and trying to login.
user/backed: use pow of two for backed action constants

the current implementation limits number of possible backed actions
to 8 as it uses pow of 16 for constants. This change introduces pow
of two and allows up-to 32 actions to be defined.

The old values are preserved for backward compatibility.
Drop only if exists
Merge pull request #11275 from owncloud/drop-if-e

Drop only if exists
Merge pull request #11229 from kofemann/for-upstream

user/backed: use pow of two for backed action constants
Don't keep the full info of all children in memory
Show a proper error message when trying to scan the filesystem for a non existing user
Merge pull request #11225 from owncloud/showLoginAgainInsteadOfJSON

Show login again instead of JSON if CSRF check fails
Merge pull request #11281 from owncloud/scanner-unkown-user

Show a proper error message when trying to scan the filesystem for a non...
Clarify possible preview providers for type Office

a
Disable external code coverage
Merge pull request #11287 from owncloud/kill-with

Disable external code coverage
Merge pull request #11286 from owncloud/clarify-possible-formats

Clarify possible preview providers for type Office
[tx-robot] updated from transifex
Expose creatable permissions trough fileinfo
Fix dav permissions for folders without create permissions