Packaging RequireJS Dependencies

RequireJS is used normally (dependencies loaded individually) in development.
Flipping the RJS_OPTIMIZATION_ENABLED bit and running r.js (before compress)
will result in all dependencies being bundled and downloaded together.

@rocha @dsjen @andy-armstrong
Only one page includes `common.js`, which is a bit dissatisfying.  Can that page be the exception rather?

Also, I believe many of the libraries can be removed from this call too.  For example, bootstrap_accessibility depends on (and loads) bootstrap, which in turn loads jquery, etc.  Underscore and backbone aren't used in this module.  I think all that is needed is domReady and init-page.  Is that true?