add point snapping

 From:  Michael Gibson
2644.2 In reply to 2644.1 
Hi Rob, I'm not sure about having all snaps just generally turned on as they normally would be.

For instance "Center" snap does not make any sense, and also "End" snap would be kind of bad since it would create control points stacked up in the exact same location which tends to cause problems later on.

But I think it should be possible to allow mid snap on lines though, I'll take a look.

- Michael