merge upstream master and add video,audio settings
add css to camera and audio settings
manage visibility of backbtn and profilebtn
implement UI new design
Merge branch 'add-videoaudio-settings-view' of https://github.com/SenecaCDOT-BigBlueButton/bbb-air-client into edit-styles

Conflicts:
	src/Default.css
	src/Main.mxml
	src/assets/res/drawable-xxxhdpi/SwapCamera_up.png
	src/locale/en_US/resources.properties
	src/org/bigbluebutton/view/navigation/pages/chatrooms/ChatRoomsViewMediator.as
	src/org/bigbluebutton/view/navigation/pages/participants/ParticipantItemRenderer.mxml
	src/org/bigbluebutton/view/navigation/pages/participants/ParticipantsViewMediator.as
	src/org/bigbluebutton/view/navigation/pages/profile/ProfileViewBase.mxml
	src/org/bigbluebutton/view/navigation/pages/userdetails/UserDetaisViewBase.mxml
	src/org/bigbluebutton/view/navigation/pages/videochat/VideoChatViewBase.mxml
modify UI color, font
remove commented out code
handle case when join meeting url is not valid xml format
Changed the error message provide to user to be more clear
Merge pull request #49 from SenecaCDOT-BigBlueButton/invalid-meeting-url

handle case when join meeting url is not valid xml format
Merge branch 'master' of https://github.com/bigbluebutton/bbb-air-client into edit-styles

Conflicts:
	src/org/bigbluebutton/view/navigation/pages/login/LoginPageViewBase.mxml
change UI to meet raise hand functionality in 0.9
remove unnecessary group
Merge pull request #44 from SenecaCDOT-BigBlueButton/edit-styles

implement new UI styles
Merge branch 'master' of https://github.com/bigbluebutton/bbb-air-client into lock-settings
Added lock settings to new layout