Merge branch 'record-and-playback-feature' of github.com:bigbluebutton/bigbluebutton into record-and-playback-feature

Conflicts:
	bigbluebutton-client/.actionScriptProperties
	bigbluebutton-client/.flexProperties

Created a script to automatically generate an audio file of the same length as the conference. Should be easily convertible to a script we can use to pad the beginning and end of audio files generated by asterisk/freeswitch.

 - send two of the remaining 3 packets at the same time to minimize choppy audio if we just dropped the 3 extra packets

Merge branch 'record-and-playback-feature' of github.com:bigbluebutton/bigbluebutton into record-and-playback-feature

- Don't check for symbolic link for /etc/nginx/sites-enabled/bigbluebutton if running on the Intalio VM

   is network congestion

   that way the RTMPProtocolEncoder can filter packets and start dropping those
   that have been in the queue for long

 - drop audio bytes if it grown larger than 1000