prevent QA link check division by zero bug
prevent QA link check division by zero bug

mchelen/project-open-data-dashboard,dhootha/project-open-data-dashboard,albertcrowley/project-open-data-dashboard,albertcrowley/project-open-data-dashboard,mchelen/project-open-data-dashboard,dhootha/project-open-data-dashboard,mchelen/project-open-data-dashboard,dhootha/project-open-data-dashboard,albertcrowley/project-open-data-dashboard