need some mousey thinky icons when changing up stuff

[cbattista]

some of the updates take a couple seconds, so it would be good if the mouse turned into thinky hourglass mode while this happened so the user doesn't freak out

[cbattista]

added some in

http://github.com/cbattista/CogSlots/commit/8678b0acc3388ee3e6b95fb19f03de85daa75c41

but there might be more opportunities for this elsewhere...