Lots of little cosmetics ...

Signed-off-by: JB Touchard <jbt@txtnet.com>
Revert 044d235..c9c0a41

This rolls back to commit 044d235d2480cd499aeff9c7044ef8274839a815.
OK for this time : quite a lot of cosmetics

Signed-off-by: JB Touchard <jbt@txtnet.com>
Merge branch 'master' of https://github.com/Education-Numerique/authoring.js
Bug : new activity bugs app

Signed-off-by: JB Touchard <jbt@txtnet.com>