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
PSR-2 clean up of Permissions.php
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
PSR-2 clean up of YamlUpdater.php
Merge pull request #1653 from GawainLynch/psr-2/Bolt

PSR-2 clean up of app/src/Bolt/
Working on "config" and "read me" buttons.
Making better "danger" buttons.
Merge branch 'master' of https://github.com/bolt/bolt into feature/improved-extension-interface

Conflicts:
	app/src/Bolt/Extensions.php