* Add "search by phone number" to "no contacts" mode.
* Coordinate "invite flow", "invite by SMS" and "new conversation with non-contact" to ensure only one (at most) is shown.
* Show "new conversation with non-contact" IFF phone number is known to correspond to a signal account.
// FREEBIE
Initially we were using AppAudioManager in our WebRTC calling
implementation to manage call related audio, but our differences from
how redphone uses the AppAudioManager diverged too much, so instead
we're instead using CallAudioManager.
reverting these changes lest we inadvertently break something re:
RedPhone.
// FREEBIE
* More space for non-callkit incoming call buttons
The "decline" and "accept" were too close together. Added a spacer, the
same size as an extra button between the two.
* Tweak spacing in call view rows.
// FREEBIE
consolidated feature-disable logic for incoming/outgoing calls to make
it easier to document, and less likely to break when we *do* implement
CallHolding
// FREEBIE
- Alice calls Bob on Signal and they start talking
- Charlie calls Alice on Not-Signal.
- Alice chooses to "Hold & Accept" putting Bob on Hold while the call with
Charlie connects.
- If Alice ends the call with Charlie, we're back in Signal-iOS and
talking to Bob, no problem.
- However, if, before ending the call with Charlie, Alice tries to swap
*back* to bob, bob won't hear any audio in the callkit screen. Alice
has to switch back to the Signal screen before the audio is transmitted.
// FREEBIE
Marking Signal-Call as started, changes the incoming call screen for
subsequent calls to show "Accept & End", "Send to VoiceMail" and "Accept
& Hold" instead of just "Accept" & "Decline"
Though - we don't support Holding. What we really want to see is just
"Accept & End" and "Decline | Send to Voicemail"
// FREEBIE