Type hinting to be sticter
Merge branch 'master-org' into issue-1637
Still tweaking icons in sidebar.
PSR-2 clean up of Application.php
PSR-2 clean up of BaseExtension.php
PSR-2 clean up of Cache.php
PSR-2 clean up of Config.php
PSR-2 clean up of Content.php
PSR-2 clean up of CronEvent.php
PSR-2 clean up of Extensions.php
PSR-2 clean up of Omnisearch.php
PSR-2 clean up of PermissionParser.php
Add extensions/vendor to Filesystemadapters.
Working on "Config" and "read me" buttons.
PSR-2 clean up of Permissions.php
We don't need to edit anything in the extensions/ folder.
PSR-2 clean up of Render.php
PSR-2 clean up of Stack.php
PSR-2 clean up of TwigExtension.php
PSR-2 clean up of Users.php