rm some unnecessary comments

These were more "notes taken during development"
than comments explaining the code.
correct exit status on error
setting up build system for frontend

Using browserify and Google Closure. We want
to be able to deploy in several different
configurations (minified/not minified and
all-in-one-file/normal), so we employ a
Python build script to do all of this for
us.

Currently only producing the all-in-one versions
(and the frontend doesn't do anything useful
yet, merely gives an indication that it's
been loaded).

The all-in-one version is intended to be easier
to use offline.
adding ICanHaz for frontend templating

The build script now searches the
template/pagelet/ directory for HTML files
and add them to the generated HTML file.

We can then render them (using Mustache)
from the Javascript with ICanHaz.