Do not force negative rates to be zero
Rank by average

* Add #top_by_average | Sort by averages
* Add running rate average | Get averages
Customizable date ranges for periods and rates
Show fastest growing and nearest threshold
Change signature api_id to string
Get signatures from API

* Recursive pull of signatures
* Need for sidekiq has developed
Bump db pool size to 50
Install Sidekiq
Move #store_signatures to Sidekiq
Prepare Sidekiq for monitoring
Configure foreman
Bump db pool size to 200
Add bootstrap
Track 5 days instead of 90
Disable signature pull & Show 90-day pulse instead of 7
Merge branch 'add_bootstrap'
Fix bootstrap and #near_threshold
Add 'pulse' header
Add metric labels
Optimize for faster feedback loop

* Taper periods to preview changes quicker