separate top and bottom menu buttons from NoTabView
Merge branch 'master' of https://github.com/bigbluebutton/bbb-air-client into refactor-viewnavigator

Conflicts:
	src/org/bigbluebutton/view/navigation/pages/participants/ParticipantsViewMediator.as
	src/org/bigbluebutton/view/navigation/pages/presentation/PresentationViewMediator.as
refactor topActionBar and bottomMenu
remove unnecessary group
fix typo
Merge pull request #33 from SenecaCDOT-BigBlueButton/refactor-viewnavigator

Refactor viewnavigator