Move build numbers to our project model
Merge pull request #35 from praekelt/feature/build-concurrency

Fix a number of build concurrency bugs
Rollback migration, this plan won't work
Change to instead use a separate table for shared repo numbers
Add migrations
Merge pull request #37 from praekelt/feature/build-concurrency

Feature/build concurrency
Merge pull request #38 from praekelt/develop

Fix a number of build concurrency bugs