* New execution stats data format, #5283
We store time and counts per-queue, per-class and totals, daily.
* break metrics into separate jobs and queues hashes
* tweak
* Move metrics tracking to middleware, start work on Query API
* Add support for labeled points in time
* Add fetch method for deploy marks
* rejigger metrics file layout
* fix tests
* Remove per-queue metrics, adds a lot of complexity with little value IMO
* store per-minute histograms
* Keep basic stats hardwired as is
The idea being that metrics are optional middleware as they have significantly more overhead in CPU time and Redis space.
* Implement top N metrics dashboard
* Add topN and job-specific metric pages
* Supply histogram data to job metrics page
* cant use local time as CI is in a different tz
* Add basic metrics graph, refactor dashboard JS to make Rickshaw reuseable
* prepare for public beta
* Prepare for upcoming Sidekiq::Config redesign
Adjust the server internals to use a config object rather than refering directly to the Sidekiq module.
