Show All Database Items on Home Screen

This branch adds the functionality to read all existing products from the database and add them to the home screen in a card style. All items have a name, price, description, category and a details button ready to be implemented. A main site controller has been also added. This main controller will handle session and user data.
![screen shot 2014-11-12 at 18 46 37](https://cloud.githubusercontent.com/assets/4637185/5021523/4aca2b14-6a9c-11e4-84b2-e61ec63dba4e.png)