Revert data.js rewrite.

Reverts the following commits:

commit f717226
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 18:06:38 2012 -0500

Only splice from internal arrays when item actually exists.

commit b9cdc41
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 16:20:35 2012 -0500

Updates to data.js re-write to pass events and manipulation

commit d1de300
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 15:09:45 2012 -0500

2.0: Rewrite data.js