friendly error for circular membership

Also, dont show current group in drop down to add to self...  shouldnt be able to pick it

Error: edu.internet2.middleware.grouper.exception.MemberAddException: membership cannot be circular, Exception in save: edu.internet2.middleware.grouper.Membership, edu.internet2.middleware.grouper.hibernate.ByObject@ce49a9, Problem in HibernateSession: HibernateSession (1c444ab): notNew, notReadonly, READ_WRITE_NEW, activeTransaction, session (c3a47a), Exception in save: edu.internet2.middleware.grouper.Membership, ByObjectStatic, query: ', cacheable: null, cacheRegion: null, entityName: ImmediateMembershipEntry, tx type: null, membership: group: penn:community:employeeOrContractorOrAffiliate, subject: 8f17313daa304da790847c558c322b02, field: members, uuid: null, startDate: null, endDate: null, , group name: penn:community:employeeOrContractorOrAffiliate, subject: Subject groupName: penn:community:employeeOrContractorOrAffiliate, sourceId: g:gsa, field: members, Problem in HibernateSession: HibernateSession (16f29f): notNew, notReadonly, READ_WRITE_NEW, activeTransaction, session (c3a47a), Problem in HibernateSession: HibernateSession (1c1b463): notNew, notReadonly, READ_WRITE_NEW, activeTransaction, session (c3a47a), Problem in HibernateSession: HibernateSession (121205f): new, notReadonly, READ_WRITE_NEW, notActiveTransaction, session (c3a47a), Problem calling method addMemberSubmit on edu.internet2.middleware.grouper.grouperUi.serviceLogic.UiV2Group