Merge remote-tracking branch 'bigbluebutton/bbb-2x-mconf' into faster-options-reading

# Conflicts:
#	bigbluebutton-client/src/org/bigbluebutton/core/model/Config.as
#	bigbluebutton-client/src/org/bigbluebutton/main/model/LayoutOptions.as
#	bigbluebutton-client/src/org/bigbluebutton/main/views/MainToolbar.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/chat/views/ChatBox.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/layout/managers/LayoutManager.as
#	bigbluebutton-client/src/org/bigbluebutton/modules/layout/maps/LayoutEventMapDelegate.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/phone/PhoneOptions.as
#	bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentOptions.as
#	bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentationWindow.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/screenshare/view/components/ScreensharePublishWindow.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/screenshare/view/components/ScreenshareViewWindow.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/users/views/MediaItemRenderer.mxml
#	bigbluebutton-client/src/org/bigbluebutton/modules/whiteboard/views/WhiteboardToolbar.mxml