Is not very readable and is not used across the project

Remove check for the call overlay being visible in postponing
the toolbar being hidden, as we don't want to have it displayed at all
when the overlay is there.

Enable ESLint on jitsi-meet with the same configuration and the same
goals as in lib-jitsi-meet.

Schedule new hide check if toolbar is hovered, overlay is shown or the sideBar container is visible (chat, contactlist , etc.).

Adds more analytics events for shortcuts, recording and shared video. Changes the way we calculate ttfm.