lineup activity advancing to the right

This implements suggestions from issue #55.

The spark lines and lables change sides.
The most recent spark line days are on the right, adjacent to the label.

![screen shot 2014-10-17 at 5 35 01 pm](https://cloud.githubusercontent.com/assets/12127/4687826/b8b11b12-565e-11e4-8986-403df3a2bd03.png)