[Code Improvement] Tidy up code. Make it more maintainable

[LuckyMallari]

Saw couple of code issues (dev, not run time) that can be improved

• Move all in-line styles onto its own separate scss/css
• Move directives out of *service.js files
• Don't abuse $rootScope!
  • Create a HabpanelService instead.
• Perhaps use an AMD/loader
• Upgrade Angular
• Use ES6
• Create common, reusable components
• Create separate .config/config.json files for dev/production
• Create a Wiki
• Use factories instead of literal objects
• Possibly use a statemachine ($stateProvider) rather than $routeProvider

Any plan to use Angular2+ ?