Reply-To support and minor bug fixes.

New Features

• [SI-2337] We now support Reply-To for messages.

Improvements

• [SI-2990] Updated the colours used by group names to increase contrast levels – groups now use a fixed-size palette.
• [SI-2992] Updated the Reply-To colours for dynamic themes.
• [SCSD-575] Disable the TouchID Settings option if it is not available.

Bugs

• [SI-2773] The outgoing ringtone would stop after one ring.
• [SI-2973] Properly disable the input text bar when viewing the message thread for a service.
• [SCSD-598] Outgoing calls were using vibrate incorrectly.