#90 Refine UI for small screen
- refactored notification center directive to follow new directive API (removed usage of deprecated options)
- create the "tiles" in a mobile first fashion
- split main.scss into multiple file by component
#90 Refine UI for small screen
- introduced vertical screen media query
#90 Refine UI for small screen
- deactivate animation for idle chrome in portrait mode
- fixed Chrome only bug with pointer-event by changing the way notif center works