Implemented chainrouter
Add phpdocs, remove unneeded files
doc fix
Update Controller/SlugController.php
Update Entity/NodeVersion.php
Update Entity/NodeTranslation.php
Merge branch 'chainrouter'

* chainrouter:
  Update Entity/NodeTranslation.php
  Update Entity/NodeVersion.php
  Update Controller/SlugController.php
  doc fix
  Add phpdocs, remove unneeded files
  Implemented chainrouter