remote_control: use GED in send_chat_message
The dbus API should use GED to emit chat messages so that applications using that API integrate better with Gajim and its plugins, especially OTR.
Steps to reproduce
See also https://github.com/philn/gnome-shell-gajim-extension/issues/4 Since the remote_control bypasses the GED for outgoing messages the OTR plugin is unable to preprocess the messages before they are sent on the wire.
OS version: Debian Sid/experimental
GTK version: 2.24
PyGTK version: 2.24