adhere to RFC that defines xmpp as official URI
some changes in remote_control.py about xmpp: to support stuff like:
As an example, an XMPP IRI/URI intended to launch an interface for
sending a message to the XMPP entity "example-node@example.com" might
be represented as follows:
xmpp:example-node@example.com?message
Similarly, an XMPP IRI/URI intended to launch an interface for
sending a message to the XMPP entity "example-node@example.com" with
a particular subject might be represented as follows:
xmpp:example-node@example.com?message;subject=Hello%20World
http://www.ietf.org/rfc/rfc4622.txt
there is also a fixme in gajim.py for when we have xmpp: in chat windows and that it should become link that when we click new chat tab opens (that probably can be done without gajim-remote in between :P)