Restcall Widget specs
RestCall widget is now loadable with an id or request model
- the view of this widget is not yet implemented
added  test case to restCallWidgetSpecs.js
Created rest-call widget view
- updated angular material
navigation added
- when client is phone, navigation is available via swipe or clicking on the menu
- when client is tablet or a bigger device, navigation will be shown directly
Switch to light-green theme from angular material