Add scrolling when dragging files. Fixes #12329

* 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

add --unscanned option to files:scan to triger a background scan

Fix autoloader for Test* files

Load external storage backends/auth mechanisms lazily

Move \OCP to PSR-4

Move OCS Provider to PSR-4 namespace

Move \OCP\Notification to PSR-4

Move \OCP\Mail to PSR-4

Move \OCP\Migration to PSR-4

Move \OCP\SystemTag to PSR-4

Move \OCP\Security to PSR-4

don't allow token login for disabled users

Fix test namespaces [files-]

Move \OCP\Route to PSR-4

Move \OCP\Preview to PSR-4

Fix test namespaces [a-e]

Move \OCP\Lock to PSR-4

add method to query all user auth tokens