message: Add a button to send email when disabling QA warnings
  Make it easier to send feedback as suggested when disabling QA
  warnings. Instead of just telling the user, show a "Send feedback" button
  to make it easier.
  Fixes
diff: @@ -2063,10 +2063,15 @@ void PoeditFrame::OnToggleWarnings(wxCommandEvent& e)
  this,
  _("Warnings have been disabled."),
  "Poedit",
  - wxOK
  + wxYES|wxNO
  ));
  err->SetExtendedMessage(_("If you disabled the warnings because of excessive false positives, please consider sending a sample file to help@poedit.net to help improve them."));
  - err->ShowWindowModalThenDo([err](int){});
  + // TRANSLATORS: This is a button to send email with feedback when clicked
  + err->SetYesNoLabels(wxID_OK, MSW_OR_OTHER(_("Send feedback"), _("Send Feedback")));
  + err->ShowWindowModalThenDo([err](int retcode){
  + if (retcode == wxID_NO) // "Send feedback"
  + wxLaunchDefaultBrowser("mailto:help@poedit.net?subject=Warnings");
  + });
  }
  }
  