Add lines covered and not covered to the CC report

This PR updated the HTML CC report to visually show the lines covered and not covered overall and on a per file bases.

For example:

![screenshot 2014-08-23 00 34 42](https://cloud.githubusercontent.com/assets/1672480/4019947/2838f344-2a98-11e4-9e4f-69517809f189.png)