[Azoth Sarin] Proper ToxId2HR() sizes.
[Azoth Sarin] ToxThread::AddFriend(QByteArray).
[Azoth Sarin] Added missing header.
[Azoth Sarin] ToxThread::ResolveFriend().
[Azoth Sarin] Implemented ToxAccount::Authorize().
[Azoth Sarin] Added handler for gotFriend().
[Azoth Sarin] Fixed human-readable string.