DELETE /users/{uuid} implemented

+ Controller method ('me' constant is not appropriate here)
+ delUser DAO method
+ delUser Service method
+ test case in UserDaoTest
PUT /user/{uuid} implementation

+ Separate behavior for usr and admin. By user you can only change Password, Email, FirstName, LastName. By admin you can change Role, Enable, Password, Email, FirstName, LastName.
+ UserService modUser method with logic
+ UserDao modUser method
+ test case for Dao