fixes bug 999925 - use 3rd party crontabber package, r=twobraids
Merge pull request #2020 from peterbe/use-3rd-party-crontabber-II

bug 999925 - Use 3rd party crontabber II (DO NOT MERGE)
Fixes bug 915246 Corrects JOINs and adds a column for product_name
Fix test error in test_crashes fixture
Fix crash_adu_by_build_signature test
Migration for bug 915246
Merge pull request #2031 from selenamarie/bug915246-adu-by-signature-fixup

Fixes bug 915246 Corrects JOINs and adds a column for product_name