Scrutinizer Auto-Fixes

@roderik requested this pull request.

This patch was automatically generated as part of the following inspection:
https://scrutinizer-ci.com/g/Kunstmaan/skylab/inspections/c1ffdaab-33a2-4cf9-a64f-d7d09676e23b

Enabled analysis tools:
 - PHP Mess Detector
 - PHP Code Sniffer
 - PHP CS Fixer
 - Security Advisory Checker
 - PHP Copy/Paste Detector
 - PHP Lines Of Code
 - PHP PDepend
 - PHP HHVM