- Bootstrap.groovy - added ROLE_USER for parent and student to login to their schools
- new UserRegistrationCmd command object to handle custom User Registration which includes school as input
- new UserRegistrationController to handle navigation for custom user registration
- removed Posting  and Wall controller and domain objects.   De-scoping social features for now
- added unique constraint for school to classroom and teacher domains
- added some custom messages to message.properties for custom User Registration page
- added create method to SchoolService to create a SchoolUser domain relationship
- created new UserRegistrationService to create basic user and admin users and perform authentication
- in main.gsp created style to move login link to the right-top
- used s2ui script to add register.gsp under layout and index.gsp under login
- customized login.gsp/index.gsp to include school. removed email