Merge breakout rooms feature with master branch. This
also includes closed captioning feature.
Conflicts:
bigbluebutton-client/src/org/bigbluebutton/main/views/MainApplicationShell.mxml
bigbluebutton-web/.classpath
bigbluebutton-web/.settings/org.eclipse.jdt.core.prefs
bigbluebutton-web/grails-app/controllers/org/bigbluebutton/web/controllers/ApiController.groovy
bigbluebutton-web/src/java/org/bigbluebutton/api/MeetingService.java