Run php-cs-fixer on the code base

doc/coding-standards.markdown

@@ -9,7 +9,7 @@ PHP code
 - Encoding: UTF-8
 - Use only the opening tags `<?php` or `<?=` for templates, but **never** use `<?`
 - Always write PHPdoc comments for methods and class properties
-- Coding style: Try to follow [PSR-1](http://www.php-fig.org/psr/psr-1/) and [PSR-2](http://www.php-fig.org/psr/psr-2/) otherwise follow the actual style.
+- Coding style: [PSR-1](http://www.php-fig.org/psr/psr-1/) and [PSR-2](http://www.php-fig.org/psr/psr-2/)
 
 Javascript code
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