dashboard: don't send failing Go commits as todos for subrepos
dashboard: don't send failing Go commits as todos for subrepos

R=golang-dev, dsymonds
CC=golang-dev
http://codereview.appspot.com/5608044
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go