Remove EquivalenceRecord type and related interfaces, implementations
remove deprecated IndexBackedScheduleQueryExecutor
equivalent schedule interfaces, types and messages
rename Equivalent to Equivalable and deprecate
Rename ScheduleUpdate to ScheduleBlocksUpdate
replace String channel reference in Broadcast with Id
add BroadcastRef type
Initial CassandraEquivalentScheduleStore
use EquivalentScheduleStore to resolve Schedules
fix broadcast deletion test
Merge pull request #29 from atlasapi/mbst-8293-equiv-schedule

MBST-8293 Equiv Schedule