Update NewUser.sim

Author: syypoo

src/system/contracts/NewUser.sim

@@ -5,10 +5,10 @@ contract NewUser {
     conditions {
         $id = PubToID($NewPubkey)
         if $id == 0 {
-            error "Wrong pubkey"
+            error LangRes("@1wrong_pub", "en")
         }
         if DBFind("keys").Columns("id").WhereId($id).One("id") != nil {
-            error "User already exists"
+            error LangRes("@1template_user_exists", "en")
         }
     }
     action {