PSR-2 clean up of DataCollector/BoltDataCollector.php
PSR-2 clean up of DataCollector/DatabaseDataCollector.php
PSR-2 clean up of DataCollector/TwigDataCollector.php
Merge pull request #1648 from GawainLynch/psr-2/DataCollector

PSR-2 clean up of Bolt/DataCollector/