First pass at the work model.
Fix `env.qualifyUrl`
First attempt at queue runner.
Test error condition for `runQueue`
Add static method for processing issue queue.
Change `badge.issueMany` to queue tasks.
Remove redundant test
Add bin for processing work queue.
Remove dead code.
Merge pull request #263 from mozilla/261-email-limit

Use a queue + cron script to process emails