MINOR Better failsafes for tree hints (allows add if hint for class is if not defined)
MINOR Better failsafes for tree hints (allows add if hint for class is if not defined)

helpfulrobot/i-lateral-silverstripe-siteconfig,silverstripe-labs/silverstripe-reports,silverstripe/silverstripe-siteconfig,jonom/silverstripe-cms,dhensby/silverstripe-reports,silverstripe/silverstripe-cms,silverstripe-labs/silverstripe-reports,jonom/silverstripe-cms,dhensby/silverstripe-cms,dhensby/silverstripe-cms,silverstripe/silverstripe-cms,dhensby/silverstripe-reports,dhensby/silverstripe-cms