Adds basic AngularJS

Adds simple controllers for mobile and desktop view in app.js
Adds static testing data in rootScope in app.js

Refs #1
Adds wip scope variable currentDay and conditional css class in desktopView

Fixes #1
Refactors app into modules

refs #2
Adds server to provide json data
Various changes to JS app

- Splits JS into multiple .js files
- Adds initial server communication to retrieve json data and display it
Removes price info, if json contains no price
Removes/Restructures legacy code
Removes DesktopViewCtrl, Adds functionality to MobileViewCtrl
Updates test data to current data
Adds functionality to canteen selection