With this change all the bundled dependencies are included in their
unminified form to ease debugging and the asset pipeline, by default,
will use UglifyJS to minify them for production when debug mode is
turned off.

Additionally, the dependencies were upgraded where possible. The
current versions are as follows:

- AngularJS v1.0.4
- Annotator v1.2.6
- d3 v3.0.5
- easyXDM v2.4.17.1
- jQuery v1.8.3
- jQuery Mousewheel v3.0.6
- jwz 26aeec1
- underscore v1.4.3

The heatmap had to incur a slight change to accommodate the d3 upgrade.

Fixes #253