Add repo polling support

jobscheduler/jobscheduler.go

@@ -42,6 +42,7 @@ type jobScheduler struct {
 
 type Run struct {
 	Name string
+	Ref  string
 }
 
 type runnerJob struct {
@@ -64,7 +65,7 @@ func runJobScheduler(j jobScheduler) {
 				for i, runner := range j.connectedRunners {
 					// don't send job to runner that is already occupied
 					if !runner.running {
-						// don't send job to runnenr with closed receiveChan (is defunct)
+						// don't send job to runner with closed receiveChan (is defunct)
 						// there should never be messages to read on an inactive runner,
 						// so we aren't losing any data here
 						select {