Message.MessageTypes should be in the immutable properties

Submitted by Guillaume Desmottes @gdesmott

Assigned to Pekka Pessi @ppessi

Link to original bug (#34924)

Description

+++ This bug was initially created as a clone of Bug #34917 +++

It should be: http://telepathy.freedesktop.org/spec/Channel_Interface_Messages.html#Property:MessageTypes

I never touched ring's code but I think ring_text_channel_properties() should contain all the Messages immutable properties:

  TP_IFACE_CHANNEL_INTERFACE_MESSAGES, "MessagePartSupportFlags",
  TP_IFACE_CHANNEL_INTERFACE_MESSAGES, "DeliveryReportingSupport",
  TP_IFACE_CHANNEL_INTERFACE_MESSAGES, "SupportedContentTypes",
  TP_IFACE_CHANNEL_INTERFACE_MESSAGES, "MessageTypes",