add debug console to webapp

![screen shot 2014-11-24 at 12 36 40 pm](https://cloud.githubusercontent.com/assets/5429146/5172651/9bed47ae-73d6-11e4-98a2-873017f7e0b5.png)

* Added a debug console to webapp
* you can now inspect variables, call functions, and evaluate javascript in the context of your running program
the CSS looks right, but please double check that the debug console still displays properly when you shrink the window below 1050px in width.