Add load_ok check to script/background_jobs
Add load_ok to background_jobs usage message
Tell how to do it, solves https://twitter.com/unwiredbrain/status/446588631424462848
Inform people about the verify-none for webhooks.
 Merge branch 'no-verify-for-webhooks' into 'master'

Inform people about the verify-none for webhooks.

Fixes #980
 Merge branch 'external-issue-tracker-instructions' into 'master'

External Issue Tracker Instructions
 Merge branch 'sidekiq_load_check' into 'master'

Sidekiq Load Check