breakpoint
Removed old group sync worker and replaced with a migration service.
Added the necessary configuration for directly connecting to Crowd's DB
Using the connection to Crowd's DB...
- Removal of the Crowd Group DAO
+ Moved migration logic into a DAO
+ Removed dependence on REST calls in favor of direct DB calls on Crowd
Added tests for the migrator DAO.
added bound column mapping
Wired up the service to the admin controller
Added semaphore lock to service
added list by prefix
Merge pull request #706 from kaysoky/CrowdMigrator

Crowd migrator service
+ Made the group parents cache null-tolerant
+ Changed the return type of the migrator DAO and service
+ Added a descriptive JSON object for the migrator to return
counts
Merge pull request #708 from kaysoky/crowdMigratorRefinements

Crowd migrator refinements
fixed test
removed log spam
compile error
Merge pull request #707 from john-hill/column-model

Column model
Remove author tag 'ewu'.
Remove author tag 'Eric Wu'.