Fixed issue between swipe and tap.

We can now see the difference between a swipe and tap.
We have more events listening if you're on a touch device.
Listen at the start and check the difference for the end and either move the point on a graph or do nothing.

Pivotal story: https://www.pivotaltracker.com/story/show/65320718

![](http://media.giphy.com/media/10wne2JZXvIeVa/200.gif)