Shiny new front end

A better front end for OpCache.

- Responsive layout
- Better fonts
- Better Graphs
- Nice confirmation buttons
- New favicon

![Old Interface (Statistics Page)](https://cloud.githubusercontent.com/assets/4975083/4641954/6efb416c-543f-11e4-9ad0-bb46be815a8e.jpg)
![New Interface (Statistics Page)](https://cloud.githubusercontent.com/assets/4975083/4641956/73d257d4-543f-11e4-8bfa-694207a9f013.jpg)
![Old Interface (Cached Scripts Page)](https://cloud.githubusercontent.com/assets/4975083/4641958/790d03ca-543f-11e4-836f-32edda3769f3.jpg)
![New Interface (Cached Scripts Page)](https://cloud.githubusercontent.com/assets/4975083/4641964/7eb81ec2-543f-11e4-8d2f-7f2769f6f053.jpg)