TODO

- check reliability of protocol availability
- manager should call har_gen + profiler as python functions, not processes
- screenshot bug on mobile user agent: "Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.133 Mobile Safari/535.19"  (try http://qq.com)
- check_protocol should try multiple times?
- make table sorting work (site list)
- rolling log files
- List of crawl dates in UI will get out of hand
- loading data animation?
- Per-site timeline
- More summary plots? CDF?