Feature additions to TimeSeriesView

* Ability to display labels across multiple colums

![screen shot 2013-11-05 at 9 08 14 am](https://f.cloud.github.com/assets/148128/1475524/ecaf7f40-463c-11e3-97d8-e5a59c168121.png)


* Ability to highlight TimeSeriesView when mouseover label

![screenshot_11_5_13_9_00_am](https://f.cloud.github.com/assets/148128/1475445/c99dd6a6-463b-11e3-8f7d-f08a4b9e3091.png)