Added user customdata to the client
parsing customdata xml
fixing js problem
setting minimum at 1
Merge branch 'master' of https://github.com/bigbluebutton/bigbluebutton
 - example how to access user data from JS
Merge branch 'master' into add-user-custom-properties
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton
Merge branch 'master' into unify-users-and-listeners
 - remove compile warning