Report phone-ringing on IRC

[chotee]

When the space-phone rings (and esp. when it's not picked up) it might be good to have the space-phone report on that on IRC. Publishing the caller-ID onto IRC is likely not a good idea.

[MerlijnWajer]

Good one, should be as simple as listening to a dbus signal: https://wiki.maemo.org/Phone_control#Phone