Update Article.php

Fix
A quick fix so that we can deploy
Merge branch 'master' of github.com:LitusProject/Litus
Bugfix
Bugfix
Bugfix
Squashed another bug
Maybe testing commits is not such a bad idea
Small changes in ShiftBundle for the new unit entity
Bugfix
Merge branch 'master' of github.com:LitusProject/Litus
Bugfix
Never enough bug fixes
One simply cannot author enough bugfixes
Put back a property that had mysteriously disappeared
Small refactor and bug fix
Forgot a kind of essential part of refactoring
Solving one bug created another one
It may be time for me to get away from my computer...
Forgot to modify some Twig files