Ongoing work video thumbnails

We now just hide the icon with values and show the interrupted one. Calling this one was causing troubles like flickering and stats popover not able to hide, once shown. On hover we are calling updateView which ends to this call which destroy and create the popover, which maybe is leading to this problems.

Do not display avatar on top of the connection problem messages

Previously the z-index was introduced in order to have the avatar
visible on top of the black video element, but now we're always hiding
the video element when the avatar is displayed, so it's no longer
required.

In small video we use UIUtil.setVisibility, so we should not use jquery show/hide for the same element.

Make the stop recording dialog work again

feat(Mute_Participant): Implement warning dialog for muting remote participant

Change main toolbar animation; optimize mousemove handler

Page reloads on BOSH HTTP errors

Button shifted

Translations update

Adds a safe check, i18n is expecting undefined not null. Fix a method name and translation to be at placeholder.

The toolbar's mute buttons depict respective features/base/media states.
However, (un)muting is practically carried out by features/base/tracks.
When the mobile app enters a conference configured to invite the joining
participant to mute themselves, the tracks would be muted but the
toolbar's mute buttons would not reflect that.

error layout added