Ref T270, log display can trigger display in sim and further improvements

* log display can trigger displayed log in simulator
* check prerequisites for log and display overlay
* made component identifiable
* pre-load parts

src/blackmisc/identifiable.h

@@ -45,7 +45,7 @@ namespace BlackMisc
         //! Use literal based object name
         CIdentifiable(const QString &objectName) : m_identifier(objectName) {}
 
-        //! Connect with QObject providing then name
+        //! Connect with QObject providing the name
         CIdentifiable(QObject *nameProvider);
 
         //! Destructor