time out in job start actor, start job again on jenkins
Check GitHub PRs and Jenkins jobs more often

PR validation is failing to see new jobs for the Scala IDE project.
Not sure what causes this, so trying a more eager version.
Diagnose failure to get commit status/labels
Slow down PR checking to avoid github rate limiting
Merge pull request #37 from adriaanm/rev-it

rev the kitten's engine faster