When updating the currently used devices always uses the id that is used by the local track instance.

The state about currently opened devices is filtered and not stored, where we only store when user selects a device preferences.
Also allow changing input devices for Firefox when we are not in a conference.

A libre build will exclude the following:

- Analytics modules
- Google Play services GMS
- Crashlytics
- Firebase

This avoids showing the + button when there is no service configured, ie with
the default Jitsi Meet install.

Avoid using a Modal since those create trouble with the view hierarchy.

The issue is if you quickly click Devices and then another tab, we may leave open tracks (video light stays on even when you are video muted).

Updates config if prosody 0.10 is used.

Update copy invite text.

Safeguard Container style when used cross-platform

* Prints errors in case of wrong initialization.

Not printing can masks some errors in the code.

* Allow only one Follow Me moderator in a meeting.

* Sends Follow Me state with all presences of the moderator.

This fixes an issue where the moderator sends the Follow Me state and then for example mute or unmute video (this will produce a presence without Follow Me state) and the new comers will not reflect current Follow Me state till a change of it comes.

* Changes fixing comments.

* Changes fixing comments.

- handle some weird bug
(https://github.com/firebase/firebase-ios-sdk/issues/233)
- use a common function to extract the URL off a dynamic link

Replace the Swift array with an Objective-C one, since it's going to store
Objective-C objects and not Swift objects (or Swift objects which inherit from
NSObject, which is equivalent).

This avoids the need for JMCallKitEventListenerWrapper entirely, since an
NSArray can store NSObjectProtocol objects, unlike a Swift array, which prompted
the creation of the wrapper in the first place.

Dear reader, I'm not proud at all of what you are about to read, but sometimes
life just gives you lemons, so enjoy some lemonade!

Joining a conference implies first creating the XMPP connection and then joining
the MUC. It's very possible the XMPP connection was made but there was no chance
for the conference to be created.

This patch fixes this case by artificially genrating a conference terminated
event in such case. In order to have all the necessary knowledge for this event
to be sent the connection now keeps track of the conference that runs it.

In addition, there is an even more obscure corner case: it's not impossible to
try to disconnect when there is not even a connection. This was fixed by
creating a fake disconnect event. Alas the location URL is lost at this point,
but it's better than nothing I guess.

This legacy code was added about a year ago to ease the migration between
releases:
631f51d627

I consider this not to be needed anymore.

The SDK will now search for an asset called "CallKitIcon" on the main bundle,
and fallback to a built-in asset it it's not there, allowing SDK users to
customize it by just adding asset with that name.

Removes Edge support.

When CallKit is enabled / disabled, a new CXProvider must be created in order to
not confuse CallKit (it misbehaves otherwise).

Updates LJM in order to stop printing few obsolete error messages.