Perf ui improvements

I've made a number of improvements to the UI performance testing code:

* Per Page statistics csv output now
 * Records # of Samples, min/max/avg/std and 90th percentile values for timing and query count values
* Added additional accordions to vm_infra and vm_cloud pages
* Added reports page under Cloud Intelligence
* Refactored existing code into separate files for readability/maintainability
* Records uncached query counts automatically now
* Refactored the ui_bench yaml for more granularity on how many times a page is browsed to