[iOS] Add new file created by Xcode 9.3

Looks like it's a good idea to check it in: https://stackoverflow.com/a/49564624

Add potential additional package to install, tested on fresh Debian 9 installation.

The feature was not ported to the new toolbar. Arguable these
can all be moved into notification but for now simply the
logic will be removed and worked on again as demand arised.

The old toolbar had a dialpad button that did a no-op.
Remove the remnant of that logic.

Adds TestConnectionInfo component which exposes some internal app state
to the jitsi-meet-torture through the UI accessibility layer. This
component will render only if config.testing.testMode is set to true.

Moves the statsEmitter.start() invocation to the middleware of
the connection-indicator feature, so that it's started for both mobile
and web (now mobile needs RTP stats for the tests).

The flag is always false.

The animate flag is always being passed in as false, so
essentially the animation isn't needed, unless a setTimeout 0
behavior is for some reason required...

jquery animate during animations sets an element's overflow to
hidden and then back to the overflow declared before the start
of the animation. If multiple animations are fired, then the
overflow could be set to hidden permanently. No calls
to Filmstrip#resizeThumbnails have animate set to true, so the
animate call is not even needed.

On Android the files will be copied to the assets/sounds directory of
the SDK bundle on build time. To play the "asset:/" prefix has to be
used to locate the files correctly.

On iOS each sound file must be added to the SDK's Xcode project in order
to be bundled correctly. To playback we need to know the path of the SDK
bundle which is now exposed by the AppInfo iOS module.

Instead of continuing with HD/SD/LD, show the eye icon
for when the participant on large video is muted or has
no video.

Fixes #2762 #2237

TouchableWithoutFeedback and TouchableHighlight interfere with the
implementation of 'pinch to zoom' to come. We prepare for it by driving
the onClick/onPress handler(s) out of Conference, through LargeVideo and
ParticipantView into Video itself where the bulk of 'pinch to zoom' will
be implemented.

In preparation for "pinch to zoom" support in desktop streams on mobile, make
certain Views not intervene in touch event handling. While the modification is
necessary for "pinch to zoom" which is coming later, it really makes sense for
the modified Views to not be involved in touching because they're used to aid
layout and/or animations and are to behave to the user as if they're not there.

Update RNFetchBlob to use a commit that fixes issues with calling UI API
on a background thread. Note: The commit used is from a forked repo that
is not yet merged on the new source for this RN component, eventually we
should be consuming from this repo instead
https://github.com/joltup/react-native-fetch-blob

* fix(welcome-page): modify styling for narrow screens

* squash: fix autoscrolling on mobile safari

When combined with mod_muc_poltergeist mod_muc_call allows
for enabling call features using a proper ext_events.lib.lua
implementation. By default when the module is configured only
stub implementations are used for ext_events.lib.lua as these
are unique between deployments.

This PR takes The Bulldozer Approach (R): removes the old toolbox and lots of
associated code, though not all of it. Subsequent cleanups will follow.

Adds Nat64InfoModule which resolves IPv6 addresses for IPv4 addresses
in IPv6 only network where jitsi-meet deployment does not provide any
IPv6 addresses as ICE candidates.

* fix(info): bold info labels

* fix(info): do not truncate url

* feat(info): show only during a lonely call

* Align hint box text to center

* Fix disappearing hint box on android

Being kicked out of the conference will result with a conference failed
event with 'conference.kicked' reason and take the user back to
the welcome page by navigating to 'undefined'.

* ref(toolbar): add accessibility labels for torture tests

* squash: update propTypes