Fix pre commit hook

I had some issues when assets were in the index
and in the stash.
Implement exam page
Fix bug in exam controller.

It wasn't querying the correct data
Add hover effect to each exam boxplot
Add Mock api evaluation ressource
Implement Evaluation page controller

The evaluation page still the smupfBars directive
to be completed.
Implement bar chart directive
Fixes percent filter

Removes decimals
Merge pull request #2 from dinoboff/master

Implement exam and evaluation page