Send timestamp to WM to avoid focus stealing prevention

[Danielle Foré]

It looks like we're not sending a timestamp when we try to pull up the player, so it gets caught by Mutter's focus stealing prevention. In Noise, we use:

this.present_with_time ((uint32)GLib.get_monotonic_time ());

It looks like both "present_with_time" on "raise" act on a Window, so it might be a drop-in replacement

[Djax (parnold-x)]

The indicator only calls Raise() over the MPRIS interface and doesn't know something about windows.
So this must happen in Noise here:
http://bazaar.launchpad.net/~elementary-apps/noise/trunk/view/head:/plugins/MPRIS/MPRIS.vala :123

[Djax (parnold-x)]

added a branch.
present_with_time alone didn't help in some cases so i call it after present. This makes sure it will be focused in front every time.