Client logger on feedback

Recording: Remove the red5 race workaround that delays processing

This was added to workaround for red5 taking a while to rewrite the
serialized (.ser) data that it streams to disk back to the .flv format.

The workaround is no longer needed, for two reasons:
* The sanity scripts run the red5 code to generate the .flv from the .ser
  if needed, and
* We're expecting more people to be using WebRTC media in the future anyways

This makes recordings available up to 2 minutes earlier than they would have
been otherwise.

Fix breakout room items don't appearing

Recording archive: log when events are are out of order and must be sorted

To help us track down exactly why this is happening - and know when we've
properly fixed it - add some logging.

Recording events archiver: fix syntax errors

I had renamed prev_event to previous_event, but missed a couple of spots.

Playback loading closed captions

Sort events when writing the events.xml file

BigBlueButton can sometimes write events out of order - this particularly
seems to affect the final RecordStatusEvent in a meeting which was ended
while recording was still running. This breaks the recording processing
scripts.

As a workaround, sort the events as they're being written into the events.xml
file. We have the following properties:

* The input data is already mostly sorted
* Items in the wrong position will be no more than a couple spots off from where
  they should be
* We should not change the relative order of events with the same timestamp.

The best algorithm to use here is a simple insertion sort. When adding each new
event to the XML structure, it scans backwards through existing events until it
finds the correct position.

For #6035

Make feedback work on logout

Fix incorrect reference in pres isDownloadable

Handle setting presentation as downloadable prior to uploading it

Center user avatar icons in Edge

Make the help link configurable

Add texts extracted from slides for accessibility

Pulled the latest html5 client locales; added cs_CZ

Presentation download

Replace double quotes in audio name with single quotes - 2.2 edition