Refactor Cti::CallerId
Refactor Cti::CallerId

- execute rebuild in a single transaction
- reduce queries
- DRY up code
- satisfy RuboCop

monotek/zammad,zammad/zammad,monotek/zammad,monotek/zammad,zammad/zammad,monotek/zammad,monotek/zammad,zammad/zammad,monotek/zammad,zammad/zammad,zammad/zammad,zammad/zammad