create array collection service, migrate updatedRecordView to use it.
add array length check to comparison
add ChangeSet service that uses new ArrayCollection
fixed lint errors
add ManagedZone service
integrate ManagedZone into change set model
fixed tests
fix rrdata message when no values are present in Record Form
Remove thy meat meter
add ResourceRecordSet service and tests, fix lint errors, add string support to ArrayCollection
fixes #56 prevent user from entering duplicate value
added missing props and moved kind to the prototype
remove unused code and extra fields in the changeSet.toJson