fix(audio): prevent mute notification to be triggered when mic is locked

When mic is locked, user is not able to talk so it doesn't make sense
to alert the user about unmuting (mute button is also disabled when mic
is locked).

Closes #12048

fix(audio): mic not working when skipCheck=true

Complements #12705

Prevent loggedOut property to be undefined

fix: Check for correct directory before deploying bbb-html5

fix: layout issues on mobile with portrait presentation

fix: client crash when userlist is hidden and viewer is ejected

Pulled HTML5 locales on July 2, 2021

feat(audio): use kurento's trickle-ice to improve mic negotiation

fix: Filter poll data for moderator and viewers

Remove linefeed for polling option

Prevent addConnectionStatus log spam when not authenticated

fix: reconnection crash

Here's what we do when user activates mic:
1 - When we do something similar to listenonly's joining process
until we find a valid candidate-pair. The information about this
local candidate is store.
2 - We then start a new userAgent, and as soon as browser finds
a candidate with the same local ip address, we leave only this
candidate in the SDP and send this to FreeSWITCH. SDP should
contain only a single candidate.
3 - The rest of signaling process is basically the same.

fix(poll): Respect maxCustom property in quick-polls

fix: removeUser - handle connections in frontends, db changes in backend

More than 5 answers are now of Custom type poll and answers passed directly.
Increase A-I slide options detection

Fix the behavior of "bbb-conf --check" when multiple STUN servers are defined

Add role check to allow webcamsOnlyForModerator changes

Restore mongo metrics feature

fix: private chat shortcuts