1) Added bunch of non-core events as entitlements, 2) reverted some useful filters which were mistakenly removed, 3) refactored code
1) Added bunch of non-core events as entitlements, 2) reverted some useful filters which were mistakenly removed, 3) refactored code

killbill/killbill-admin-ui,wwjbatista/killbill-admin-ui,killbill/killbill-admin-ui,jaimerson/killbill-admin-ui,wwjbatista/killbill-admin-ui,wwjbatista/killbill-admin-ui,killbill/killbill-admin-ui,jaimerson/killbill-admin-ui,jaimerson/killbill-admin-ui,killbill/killbill-admin-ui