Improvements to Breakouts on HTML5

 - check if chat message is available to prevent NPEs

Merge branch 'client-type-get-meetings' of https://github.com/antobinary/bigbluebutton into antobinary-client-type-get-meetings

Fix #5725

Bump version to RC1

Fixed typo

Improve checking of webhooks and ffmpeg

fix HT slide title

Update bbb-conf

One more step for upgrade ffmpeg

RaP: Don't error on pencil drawings with 0 dataPoints

 - display meeting is about to end warning to user and breakout warni…

In some cases, we get DRAW_END events for pencil shapes from the
html5 client that have no dataPoints. The only thing we can really
do here is detect the issue and ignore the shape.

In some cases, this may result in the shape's intermediate drawing
updates being shown, but it'll disappear when the end event happens.

Add check for ffmpeg

Fix #5736

 - no locales to update

 - include .tx/config so we can pull locales

RaP: Convert aspect ratio numbers to int before checking value

The checks for 0 numerator or denominator were failing due to
type mismatch

Two chat improvements