on creation only test for existing users if the backend supports user creation
this solves the issue where no users can be created any more if backends are active which always return true on userExists() like WebDAV Auth
ellipsize infield labels when too long, specifically fix #871 for database labels on installation
make MappedLocal available and testable within Linux as well
Merge branch 'master' into mapped-storage-unit-testing-linux-master
fixing mappedlocal storage to work on non-windows as well
this allows us to run unit tests on linux - necessary to enable easy regression testing
Merge pull request #1618 from owncloud/mapped-storage-unit-testing-linux-master

Mapped storage unit testing linux master
alpha 1
fixed database input group having two slightly thicker dividers
Merge branch 'master' into fixing-1424-master
no need to implement createUser in web dav auth
Merge branch 'master' into fixing-1424-master
introduce new virtual method hasUserListings() to determine if a user backend can list it's users.
Remove the leading slash from the filename for opendir
https://github.com/owncloud/core/pull/1598#discussion_r2976684
[tx-robot] updated from transifex
Merge branch 'master' into fixing-1424-master

Conflicts:
	settings/js/users.js
missing piece after merge
LDAP: format dn before using it, not other way round. fixes #1605
Merge pull request #1665 from owncloud/fix_ldap_1605

LDAP: format dn before using it, not other way round. fixes #1605
Merge pull request #1574 from owncloud/installation-label-overflow

Installation label overflow, fix #871