Refactor scripts into modules

This change is to convert existing JS scripts into modules and add a grunt build script to generate a bundle using browserify.

I need to perform more regression testing but I wanted to submit what I have so far to get some feedback.

Depends on https://github.com/vegphilly/vegphilly.com/pull/425.
Interesting, thanks for explaining. I'd have been interested in trying the simpler, verbose way to see how it goes. However, since you already put the work into setting up the aliases, and this matches other projects we can use as reference, we'll stick with it.