Switch askyourgovug-theme to the asset pipeline
Use .js extension.

Although not documented, Mark notes that there appears to be some
reliance on the extension for individual compiled files (at least under
Rails 3.1).
Update profile photo links for asset pipeline
Update to use core partials

This means less duplication, and removes the obsolete link to
favicon.ico
Merge branch 'switch-to-asset-pipeline'