Throughput report

Throughput Chart
 * Configurable (by default turn off)
 * Shows additional chart "Throughput (requests per second)"
 * If more than one test URI show total throughput

![image](https://cloud.githubusercontent.com/assets/473022/3096228/66c73f3c-e5d1-11e3-933e-3a7a532d1364.png)