Breakup of common into tiny pieces

Trying to make some headway in making our code more modular from the CS meeting.

This now has common broken into many pieces so new modules may now only include the utils they want.

## Discuss:
Was utils the right name?
Not a mega problem as it's easy to change.

Do we write tests for these functions? I would say yes.

## TODO:
Go through code and start removing `common.js` dependency.

![EXPLODE!](http://iruntheinternet.com/lulzdump/images/gifs/falcon-punch-computer-tower-explode-1344381265j.gif)