user leave now uses the html5 bridge
 - start working on the UI
adding a response when server is down
Merge branch 'make-users-user-conn-invoke' of https://github.com/bigbluebutton/bigbluebutton into make-users-user-conn-invoke
manage UserModel in UserCollection
Merge pull request #192 from SenecaCDOT-BigBlueButton/html5-bridge

manage UserModel in UserCollection
 implement create or select poll UI
 - implement create new poll window UI
 - start implementing UI for taking a poll
 - implement take poll UI and handle responses
 collect responses to questions
 - implement updating of poll UI
polling charts
Merge branch 'make-users-user-conn-invoke' of https://github.com/bigbluebutton/bigbluebutton into make-users-user-conn-invoke

Conflicts:
	bigbluebutton-client/src/org/bigbluebutton/modules/polling/managers/PollingWindowManager.as
 open main poll window
 cleanup and wrap pie chart result in window
Conflicts:
	bigbluebutton-client/src/org/bigbluebutton/modules/polling/managers/PollingWindowManager.as
 open display result window
 - hook up display results and update window
 - try to display results
 - display result in pie chart