Removed set user identifier on User CRUD

Change-Id: I10aafd400109126c4ce6ff8ea6ec36c824bd8ed9
Signed-off-by: smarcet <smarcet@gmail.com>

app/libs/Auth/Models/User.php

@@ -384,6 +384,7 @@ class User extends BaseEntity
         $this->affiliations = new ArrayCollection();
         $this->scope_groups = new ArrayCollection();
         $this->reset_password_requests = new ArrayCollection();
+        $this->spam_type = self::SpamTypeNone;
     }
 
     /**

public/assets/js/admin/edit-user.js

@@ -79,7 +79,6 @@ $(document).ready(function() {
         rules: {
             "first_name"  : {required: true},
             "last_name"   : {required: true},
-            "identifier"  : {required: true},
             "email"       : {required: true, email: true}
         }
     });