MINOR create the ability to have some roles only be able to be applied by admins (from r88090) (from r96784)
MINOR create the ability to have some roles only be able to be applied by admins (from r88090) (from r96784)

git-svn-id: 61ad833bee3a753d148e0d349fad2a795836b318@102477 467b73ca-7a2a-4603-9d3b-597d59a354a9

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