fix on display method, in HallOfFame corrected some variables
using public variables to identify registered user, instead of rendering Content which is part of CPortlet using run, code refactoring and in UserIdentity we check if the user has already registerd with given username
using the model stored within site controller
added Register action dummy, it needs more work in order for this to be usable
extended LoginForm with additional rules and conditions for registering users - no db table available
checking if a user exists and return the flag