First pass to implement storing and using current video position when a user loads a video page.

**THIS IS NOT READY TO MERGE** - I need help figuring out why `whenReady` is not being called, and to remove the hack below.

This is me searching for a collaborator :)

Otherwise, this works - a user leaves the page in the middle of a video, comes back, and they'll start at their last save point.
![screen shot 2014-02-23 at 2 00 34 pm](https://f.cloud.github.com/assets/4072455/2241529/96fa660a-9cd6-11e3-89ef-b838e6d671bf.png)