Change directory structure

Change directory structure from MVC to Feature based
New directory structure working with angular

Merge branch 'plain-dev' into angular-dev

Conflicts:
	Gruntfile.js
	app/Calculator/calculator.js
	app/config/main.js
	app/index.html
	src-app/Calculator/calculator.coffee
	src-app/config/main.coffee
	src-app/index.jade
	src-test/main-test.coffee
	test/main-test.js