refs #780, fixes login/flightplan preset

* empty airline is valid
* sync with flightplan (new signal to indicate changed login values)
* better preset of own model

src/blackmisc/aviation/atcstation.cpp

@@ -194,7 +194,7 @@ namespace BlackMisc
         {
             if (this->m_controller == otherStation.getController()) { return; }
             CUser otherController = otherStation.getController();
-            this->m_controller.syncronizeData(otherController);
+            this->m_controller.synchronizeData(otherController);
             otherStation.setController(otherController);
         }