* feat(presence): display status in thumbnail and large video

- Create a React Component for displaying presence. It currently
  connects to the store for participant updates but in the future
  should not be as smart once more reactification occurs.
- Modify filmstrip css so the presence status displays horizontal
  center and below the avatar.
- Modify videolayout css so the presence status displays horizontal
  centered and with a rounded background.
- Dispatch presence updates so the participant state can be update.
- Update message position on large video update to ensure message
  positioning is correct.

* squash: do not show presence message if connection message is displayed

Hides the UI component showing dialout codes and uses the dial input without validating it.

Skips printing error when dial-in numbers is not configured.

- Swap the telephone input with FieldText.
- Swap the dropdown trigger input with FieldText for styling
  consistency with the telephone input.
- Wrap the dropdown trigger so it can be modified with jitsi css.
- Use flexbox to have the trigger and input align horizontally
  but have the input take up width if the trigger is not displayed.

* feat(notifications): implement a react/redux notification system

* squash into impl explicit timeout, style

* ref(notifications): convert toastr notifications to use react

* ref(toastr): remove library

* squash into conversion: pass timeout

* squash into clean remove from debian patch

Make toolbar's microphone button enabled whenever there are any
'audioinput' devices available and allow to add audio during
the conference even if microphone permissions were denied on startup.

Whatever I've tried so far ends up failing in really weird ways, so let's admit
defeat, for now. Destroy containers only on Android.

This shall be revisited when we update RN to version >= 0.43 and we have
"display: 'none'" available.

Web's ExternalAPI accepts an object with properties as one of its
constructor arguments and from which it generated a URL. Mobile's
JitsiMeetView.loadURLObject is supposed to accept pretty much the same
object.

Introduces loadURLObject in JitsiMeetView on Android and iOS which
accepts a Bundle and NSDictionary, respectively, similar in structure to
the JS object accepted by the constructor of Web's ExternalAPI. At this
time, only the property url of the bundle/dictionary is supported.
However, it allows the public API of loadURLObject to be consumed. The
property url will be made optional in the future and other properties
will be supported from which a URL will be constructed.

When a Container is not visible there is no need for it to react to touch
events, thus avoid wrapping it in a touch component.

In addition, simplify the style needed for hiding the component. Moving the view
out of the window boundaries no longer works on RN 0.42 on iOS. Seting the size
to 0 works well on both platforms, but in the future (when we upgrade to RN >=
0.43) we should switch to display: none:
4d69f4b2d1

Because on web video track is stored both in redux and in 'localVideo'
field, video is attempted to be unmuted twice when turning off the audio
only mode. This will crash the app with 'unmute operation is already in
progress'. This commit will prevent from taking action from the web
world if the video track already exists and will make the redux side
rollback unmuted status in case unmute fails.

In another installment of "how on earth?!", using a 1px border instead of a
0.2px border fixes view clipping on a device where it didn't work before
(Moto X Play).

Observations:

- When nothing was rendered, rotating the device made the buttons show up, this
  makes me think the Surface is not properly composited with the toolbar view
  for some reason. Why this happens in some devices and not in others remains a
  mistery.

Other approaches attempted:

- Setting View.collapsed to false so it will remain in the view hierarchy. It
  made no effect.

- Setting View.needsOffscreenAlphaCompositing to true. It made no effect.

Just like before, I came up with this workaround by accident, but couldn't find
another way, so here we go again.

This essentially reverts
023359b9d2

In the filmstrip we keep a container full of thumbnail views. Destroying these
every time we want we want to hide it is costly, as new renderers have to be
recreated, and they lack context, so there is an increased chance for "black
thumbnails".

With the upgarde of @atlaskit/icon to 7.0.0, the size prop
essentially became required to maintain its appearance in the
jitsi app, otherwise it'll unexpectedly try to take up the
available space and cause minor display issues.

When the 'startAudioOnly' config option is set to true the conference
will start in the audio only mode.

The speakerStatus field already exists as part of the objects
in the participant reducer. When the library updates the
connection status of a user, plumb that update through to redux.

Instead of passing stats through UI then VideoLayout then the
SmallVideo, pass stats directly to what uses it--ConnectionIndicator.
This also bypasses adding the stats to the store, as they do not
seem to be something that needs to be shared or stored app-wide
just yet.

navigator.product is read-only, so we don't run into the risk of it being
changed.

The end goal of this patch was to avoid opening the camera when there is no
welcome page.

In order to achieve this, the logic for creating the local tracks was
refactored:

Before this patch local tracks were created when lib-jitsi-meet was initialized,
and destroyed when it was deinitialized. As a side note, this meant that when a
conference in a non-default domain was joined, local tracks were destroyed and
recreated in quick succession.

Now, local trans are created and destroyed based on what the next route will be,
and this happens when the target room has been decided. This allows us to create
local tracks the moment we need to render any route, and destroy them when there
is no route to be rendered. As an interesting byproduct, this refactor also
avoids the destruction + recreation of local tracks when a conference in a
non-default domain was left.

The full-screen module uses the HIDE_DIALOG action to re-engage the full-screen
mode.

The functions need not return anything, or it will be dispatched as another
action.

* feat(local-video): convert to react

- Create a VideoTrack component for displaying a video element.
  This mirrors native also having a VideoTrack component.
- The VideoTrack component does not let React update it to prevent
  the video element from re-rendering, which could cause flickers
  and would not work with temasys's overriding of the video element.
- VideoTrack extends AbstractVideoTrack to mirror native
  implementation and to get the dispatch of the onplaying event.
- Remove the onclick handler on the video element. Honestly, I
  didn't get it to work, and did not try, but it is also unnecessary
  because another handler already exists on the video wrapper.

* ref(device-selection): VideoInputPreview uses VideoTrack to show video

* squash into conversion: change css selectors

* squash into conversion: mix in abstract props

* squash into conversion: change shouldComponentUpdate check

* squash: update comment about why triggerOnPlayingUpdate is used

config.disableDesktopSharing - when set to false will disable desktop
sharing

interfaceConfig.DESKTOP_SHARING_BUTTON_DISABLED_TOOLTIP - when value is
assigned, will not hide the desktop sharing button completely, but show
as disabled with this value used as the tooltip text.