refs #418, ICAO data for reader

* value objects and respective lists
* adjusted CAircraftIcao to use new classes
* some smaller fixes, Doxygen
* reader for values from database JSON values
  http://vatrep.vatsim-germany.org/service/allaircrafticao.php?rows=10000&sord=asc
* Related: Slightly improved signals for VATSIM reader

src/blackmisc/threadedreader.cpp

@@ -11,7 +11,6 @@
 
 namespace BlackMisc
 {
-
     CThreadedReader::CThreadedReader(QObject *owner, const QString &name) :
         CContinuousWorker(owner, name),
         m_updateTimer(new QTimer(this))