added reward policy to pundit to replace cancan
migrated rewards controller to pundit
migrated reward views to pundit
updated child process gem
removed cancan abilities for reward
removed reward abilities
Merge pull request #558 from diogob/migrate_rewards_privileges

Migrate rewards privileges to Pundit
define end_of_association_chain into updates controller [Fix #65336710]
we need to use the lambda for prevent a weird bug :S [Fix #65336710]