Dynamically enables/disables the toolbar video button. Prior to that
commit if we would start with no video there would be no way to enable
it later on.

Screen sharing video should not be muted if video input device is
disconnected.

Will restore the camera video state from before screen sharing was
started (and will mute it if it was muted).

Do not go back to video from screen sharing if there was no video stream
at the time when screen sharing was being started.

Instead of disabling the video button in the toolbar, mark it as muted,
so that the user can click it to try enable video later on, even if
joined without video (either declined permission or was starting with
screen streaming and dismissed the dialog).

The container needs to store user's ID in order for the 'isOnLargeVideo'
logic to work correctly when user has no stream (previously it was
obtained from stream which can be null/undefined).

* Fix(AddPeopleDialog): Fixes error state and close dialog

* (to-squash) Addresses comments

fix(desktop_picker): Use defaultProps

* feat(indicators): move the "top toolbar" indicators to react

* wrap baseindicator

Remote control

feat(config.js): add config.testing.

Keep track of the connection and conference objects so we can leave and / or
disconnect early, before the connection is established or the conference joined.

On iOS, if the app is closed the startup options are only passed as the
`launchOptions` dictionary of `applicationDidFinishLaunching`. Thus add a helper
method to be called from there by embedding applications so we can copy that
dictionary.

Match the one on the web.

React (pun intended) to prop changes, that is, load the new specified URL.

In addition, fix a hidden bug in loading the initial URL from the linking
module: we prefer a prop to the URL the app was launched with, in case somehow
both are specified. We (the Jitsi Meet app) are not going to run into this
corner case, but let's be defensive just in case.

React (pun intended) to prop changes, that is, load the new specified URL.

In addition, fix a hidden bug in loading the initial URL from the linking
module: we prefer a prop to the URL the app was launched with, in case somehow
both are specified. We (the Jitsi Meet app) are not going to run into this
corner case, but let's be defensive just in case.

* fix(filmstrip-only): vertically align center the toolbar

Use top 50% to position the toolbar's top at the vertical center
of the iframe. Then use transform 50% to move the toolbar itself
up 50% so its middle matches the middle of the iframe.

* squash: toolbox should center with filmstrip

Refactor deployment info

Apparently iOS doesn't like dangling background tasks very much, so update the
background timers plugin with a version which fixes this.

https://github.com/ocetnik/react-native-background-timer/pull/38

Also accomodate for the API changes upstream.

Credits to @lyubomir for finding the needle in the haystack.

No tabnabbing

Popover works by first creating a DOM element with display none
then having jquery calculate its width and new position and
then setting display to table. This does not work with p2p
connection stats, which are much wider than the default width
of the popover. What will happen is when display table is set,
the width will increase greatly so the positioning will be off.
The workaround here is to set display table as the default
display but toggle visibility instead.

Reported by Manav.

Icons on the thumbnails can flicker when scrolling through videos.
To give rendering a bit more power, and thereby help with rendering
icons without flickering, force hardware acceleration.

#1730