Fix bugs with new users

src/view/UsersDialog.cpp

@@ -71,6 +71,8 @@ UsersDialog::UsersDialog(KissCount* kiss, wxUI *parent) : wxDialog(&(*parent), -
 
   if (users_list.size() == 0)
     OnNewUser(event);
+  else
+    ShowModal();
 }
 
 void UsersDialog::OnOK(wxCommandEvent& event)

src/view/wxUI.cpp

@@ -143,7 +143,6 @@ void wxUI::ShowPreferences()
 void wxUI::ChangeUser()
 {
   UsersDialog u(_kiss, this);
-  u.ShowModal();
 }
 
 void wxUI::LoadUser()