[project] css -> less
[project] removed /css, added to .gitignore
[project] updated Makefile for less, added bin/watch-src

run bin/watch-src while developping, it wil automatically rebuild
the CSS files in /css on every edit.
[project] js -> coffee

Made the move from javascript to coffeescript
All scripts seem to work, more excessive testing is advised though
[backend] fixed null pointer
[project] updated watch-src and html files for coffee
[project] updated Makefile for coffeescript
Merge branch 'dev-less' into develop

Conflicts:
	manifest.json