Minor OmniGraffle UX Template Update: Grid and guide fixes

I made a minor update to the OmniGraffle UX Template. The grids were screwed up in the last update I made, so snapping wasn't working. Some guides were also pretty sloppy, so I cleaned those up as well to keep things nice and neat.

Thanks to Jayson Elliot for the heads up about the grid snapping problem.

Update your templates here.