remove frontend code (now in Frontend project) + user login service
Merge branch 'develop' of https://github.com/MasseGuillaume/Sauce into MasseGuillaume-develop

Conflicts:
	web/app/views/index.scala.html
	web/app/views/main.scala.html
	web/public/scripts/controllers/code.js
	web/public/scripts/services/insight.js