Recording cleanup

Instead of assuming that wav files have 44 byte headers (they usually
don't - freeswitch adds some metadata tags), add a super-simple wave
file parser that just finds the offset where the audio data actually
starts.

The sanity check script was using one of the functions; it's been
changed to use a function from the EDL audio code instead.

It's no longer used anywhere in the recording processing, and the one
remaining use in the sanity script can be replaced with a (less buggy!)
function from the video EDL code.

Fix exception with closed caption tab for viewers

 - do not recycle http connection. Use a fresh one for each request t…

   when reusing old connection.

 - comment out record option for breakout rooms pending further testing.

 - change jws failed to start timeout from 60s to 90s. Sometimes it t…

   30s to download the libs especially for those far from the server or those with
   slow connection.

 - custom poll was sent to the wrong actor. Route it to the correct m…

 - propagate meeting metadata from parent to breakout room

html5client: removed a package depencency; adjustments for Meteor 1.4.1.1; removed an error log

Add property to closed caption transcript model for the locale code

Add a fourth help image for mac screenshare

Added more explanation for Mac FireFox in screenshare-help.html

 - do not display the "Record" label.

Hide breakout rooms checkbox

Handle case for starting desktop sharing when using FireFox 

 - allow logging of some events

Updated LogoutURL handling by client

ffmpeg linux jars

Bbb1.1 fix for bugs