[Telepathy] iconify and deiconify empathy

[Nicolò Chieffo]

> WM are all totally bugged, and each version resolve some bugs and create
> new ones (especially compiz). We already have some workarounds in
> empathy for that main window, but we can't fix everything in empathy if
> WM does not do its job.

My question is: why is empathy the only app which has problems with
the task list?
(pidgin, rhythmbox, banshee are apps with a tray icon, bot none of
them has the same problem of empathy)

I bugged compiz: https://bugs.freedesktop.org/show_bug.cgi?id=22223