Fix bug where re-installing would cause sync messages to fail and
produce unresolvable error indicators on messages that were actually
sent.
// FREEBIE
When we re-register, our deviceId might change, which makes our sessions
are no longer valid since the recipient will see us as a new device.
Fixes#388
Previously would fail to register keys by using the wrong username.
The username should be <number>.<deviceid> once we've confirmed our
account and received a deviceId from the server.
// FREEBIE
Following the pattern from previous commit, let the server class accept
a url and login credentials from the caller. Then integrate into
MessageReceiver and AccountManager.
// FREEBIE
This new endpoint should always issue a response to a provisioning
socket so if we don't receive one we should assume the connection has
been lost.
Closes#318
Protocol and handling is all analogous to contact sync: Multiple
GroupDetails structs are packed into a single attachment blob and parsed
on our end. We don't display the synced groups in the conversation list
until a new message is sent to one of them.
// FREEBIE
lilia