refs #728, hide load indicator when no vPilot rules are loaded

src/blackmisc/simulation/fscommon/vpilotrulesreader.h

@@ -47,6 +47,10 @@ namespace BlackMisc
                 //! \threadsafe
                 QStringList getFiles() const;
 
+                //! Has files
+                //! \threadsafe
+                bool hasFiles() const;
+
                 //! File names
                 //! \threadsafe
                 void addFilename(const QString &fileName);