- Bootstrap.groovy - added user creation for each parent
- Config.groovy - changed grails.project.groupId to edu.harvard.cscie56.prek
- moved non-controllers command objects UsersRegistrationCmd.groovy and PersonalInfo.groovy  to src/groovy
- moved non-domain enum objects Gender.groovy, Status.groovy and Period.groovy to src/groovy
- Set cache true  for SchoolUser and UserRole
- Parent.groovy - set nullable to false for user
- Created new domain PriorityDsl to save Dsl for each school
- Removed (flush:true) from each PersonalInfoService.groovy, PriorityService.groovy and UserService.groovy
- Improved currentUser and currentUserSchool to load user from the spring security principle ID
- Modified PriorityOverride to use new method addSchooltoDsl to append school id to each Dsl method parameter list
   and modified each of the 3 possible override methods to use school id to find the school, instead of the UserService