[ROADMAP] : Define roadmap for contenta angular features

[joaogarin]

Lets discuss and define here the roadmap for contenta angular2 features.

• Angular2-jsonapi integration
• Switch to Angular service worker
• Server push
• Make recipe detail page (according to the wireframes)
• Make recipes page a lazy loaded module (its not the homepage according to the wireframes)
• Build homepage according to wireframes
• Universal support
• Infinite scroll
• Authentication
• Editing / posting back
• App scaffolding from OpenAPI endpoint