install-database.sql :: updated a space.
Merge remote-tracking branch 'origin/anu' into veekija
UserController :: Updated Persistant Unit Name
/schema/install-database.sql :: added default records in role
/schema/install-database.sql :: added default records in users table.
model/Users.java :: updated the model and removed unnecessary relations.
model/Users.java :: added getters for determining the user role.
model/Role.java :: removed unnecessary relations.
controller/UserController.java :: updated the controller to redirect the user to respective modules based on the user's role.