Implemented auto-positioning of tooltip windows.
Keep floating element from being obscured by item. Modified code so that there is a helper layer and a reference layer. The reference layer allows the z-index of the tooltip to be controlled independently of the "glow" layer, which allows it to sit on top. Also moved numbers in a bit as they were showing up off the screen in some cases.
Merge pull request #3 from MikeTheReader/master

Branch from MikeTheReader:master