removing margin and adding padding to list in planning mode
Merge branch 'develop' into feature/editing-ui-styles

* develop:
  adding title when showing list of sessions for one slot
  opening session list for this slot when clicking on no session item in my planning screen
  changing order of menu item
  adding reference to crouton library in about
  use crouton instead of toast when star session
  show crouton instead of toast when import starred session
  hide crouton when activity is destroyed
  adding method to show a crouton from a fragment
  adding crouton project deepndency
  adding new icon
Merge branch 'feature/editing-ui-styles' into develop