Late Summer Clean-up

This is a complete rewrite of the backend filtering interface using [Selectize](http://brianreavis.github.io/selectize.js/) to enhance user experience. Publish Filtering now loads all filtered entry lists dynamically using AJAX which should make searching much faster.

![safari](https://f.cloud.github.com/assets/25466/1072105/d72618aa-1487-11e3-8145-706584150dd9.png)

All extension files have been cleaned-up.

This should fix #19, #22, #25, #35 and possibly #36.