Implement community feedback

Remove other registration references
Enabled enter submit in registration form
Fixed create-profile password validation to be on debounce
Fixed register page title

src/app/core/auth/auth.service.ts

@@ -270,18 +270,6 @@ export class AuthService {
     return observableOf(authMethods);
   }
 
-  /**
-   * Create a new user
-   * @returns {User}
-   */
-  public create(user: EPerson): Observable<EPerson> {
-    // Normally you would do an HTTP request to POST the user
-    // details and then return the new user object
-    // but, let's just return the new user for this example.
-    // this._authenticated = true;
-    return observableOf(user);
-  }
-
   /**
    * End session
    * @returns {Observable<boolean>}