Add LESS compilation of bootstrap.css and bootstrap-responsive.css.
Add missing dependencies.
Link to bootstrap.css from index.html.
Add bootstrap LESS compilation to Grunt build tasks.
Add support for template functions.

This allows supporting more complex formatting than can be attained
merely with templates.  For example, templates rendered via $interpolate
can't do conditionals.  Also, we may expect to sometimes have raw data
that needs some mangling before being presented (think dates that may
arrive as ISO strings or seconds since epoch).