refs #452, adjusted aircraft/aviation classes

* support for loading from datastore
* improved timestamp handling
* new color and country classes
* new attributes
* updates for missing parts in CUser

src/blackmisc/aviation/aircraftenginelist.cpp

@@ -56,7 +56,6 @@ namespace BlackMisc
             clear();
             for (const auto &e : json.keys())
             {
-
                 CAircraftEngine engine;
                 int number = e.toInt();
                 engine.convertFromJson(json.value(e).toObject());