30 single tap graph

Closes #30 

Show a details "toast" like UI element when someone taps a bar in the graph in stats.  This should be similar to the data presented in the mouse over on web stats.  This is ultimately a temporary solution until the API fully supports us doing a details page like when a bar is clicked on the web.

Both code and UI is up for review.

cc: @isaackeyet @drw158 @daniloercoli