* Move a-b to PSR-4
* Move c-d to PSR-4
* Move e+g to PSR-4
* Move h-l to PSR-4
* Move m-r to PSR-4
* Move s-u to PSR-4
* Move files/ to PSR-4
* Move remaining tests to PSR-4
* Remove Test\ from old autoloader
This adds a "backend" type filter to the index REST route which is a pre-requisite for https://github.com/owncloud/core/issues/12620
For example when calling `index.php/settings/users/users?offset=0&limit=10&gid=&pattern=&backend=OC_User_Database` only users within the backend `OC_User_Database` would be shown. (requires sending a CSRF token as well)
Depends upon https://github.com/owncloud/core/pull/12711
backends. This is a port to master from PR #7745
remove OC_GROUP_BACKEND_GET_DISPLAYNAME option for group backends
Conflicts:
lib/private/group/backend.php
LDAP: getDisplayNamesInGroup is not an option for group backends anymore
Conflicts:
apps/user_ldap/group_ldap.php
apps/user_ldap/group_proxy.php
clean up group backends
Conflicts:
lib/private/group/database.php
remove now unnecessary test
implement getDisplayNames in group manager
adjust user manager tests
test for group manager's displayNamesInGroup
trim must not be used in empty in PHP < 5.5
keep the constant to not provoke PHP warnings
Conflicts:
lib/private/group/backend.php
