Escape tags to fix issue #182

Changes the padlock to locked when a participant is entering a locked room and still haven't entered the key. We show padlock locked whenever the room requires a key to enter.

Implements support for events for the API. Adds toggleChat and toggleContactList commands. Renames filmStrip to toggleFilmStrip command. Fixes issues with removing the embedded Jitsi Meet.

Adds glowing to the bottom toolbar chat button and the contact list button when a contact enters or leaves.

Takes advantage of the smart simulcast layer escalation of the bridge to prevent blackness when we switch to a higher order layer.

Fixes issue with unable to open second dialog on wrong room key entered. Still tests to come. Handle dialog action after the dialog is closed, otherwise the event for wrong key can come before the dialog is closed and will not be open again.

Adds prosody config to conf.avail and enable it in conf.d so we don't wipe prosody config on installing meet.

Updates debian package with dependency to yui-compressor, which generates min versions of some libs (strophe plugins).