Disables loading side panels when they are disabled.

Adds some safety checks for disabled contactlist.

The audio levels are gathered by lib-jitsi-meet via polling of
RTCPeerConnection.getStats() which is very slow on Android. Since the
mobile app makes no use of audio levels, it is easiest to disable them
for now in order to not penalize the app.

Filmstrip is extended with "Hide" button

make side panels init from js

Customer agreement

Adjusted notification width

fix(LargeVideoManager): frozen displayname in a msg

The "data-i18n-options" attribute value is stored in jQuery cache and
at the time when i18-next tries to access it to do the translation
it gets the old value from the cache and the message is not updated
correctly. Passing the "msgOptions" explicitly to "translateElement"
fixes the problem by avoiding jQuery cache.

Restyled toolbar splitter

Esc closes shortcuts dialog

Conn quality

Updates i18next and bundles default translations.

Fixes not able to close it with esc button.

Close page update

It looks weird when the page reload overlay appears and the conference
continues in the background (the connection to the JVB remains active).
The library will not recover and the conference can not continue without
the signalling, so the room should be left and media stopped.

fix(toolbar): popups

Close pages text are different depending whether feedback was provided or not.

Text updates.

Updates lock state

make extended buttons dynamic

Adapts to changes in lib-jitsi-meet. Uses an Array which guarantees the
order of its elements, and avoids setting a css property multiple times.