Fix user sort

calculate/lib/variables/user.py

@@ -84,7 +84,8 @@ class VariableUrLogin(Variable,LdapHelper):
         self.label = _("User name")
 
     def choice(self):
-        return [""]+list(set(self.getLdapUserlist()+getPasswdUsers()))
+        return [""]+sorted(list(set(
+                    self.getLdapUserlist()+getPasswdUsers())))
 
     def check(self,value):
         """Does user exist"""