- fix https://code.google.com/p/bigbluebutton/issues/detail?id=1587 where
   webcam cannot be started again when window is closed while previewing video
Updated defaut.pdf to have a link to test running a Java applet (for testing desktop sharing)
Modified test Java link in default.pdf
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton
Merge branch 'master' into remove-rtmpt-test