Feature/history

![swagga](http://www.reactiongifs.com/wp-content/uploads/2013/07/no-one-on-the-corner-has-swagga-like-us.gif)

## Model History
* This resolves #290 and #306
* Brought over the `LogEntry` model from the original Django admin.
* Added in a model history url.
* Added history template tag for home page.
* Automatic logging of objects (Add, Change, Delete).
* Created template for history view.
* Added `My Recent Actions` module to the home page.
* **MORE PEP8 FIXES THAN YOU CAN SHAKE A STICK AT**