New JSON config cleanup and testing

include/ui/eventfilters.h

@@ -37,5 +37,5 @@ public:
     bool eventFilter(QObject *obj, QEvent *event) override;
 private:
     bool m_loggingEnabled = true;
-    QSet<QObject*> m_wasShown;
+    QSet<QObject*> m_shown;
 };

include/ui/projectsettingseditor.h

@@ -71,6 +71,7 @@ private:
     void addNewGlobalConstant();
     void addGlobalConstant(const QString &name, const QString &expression);
     QMap<QString,QString> getGlobalConstants();
+    BaseGame::Version getBaseGameVersion() const;
 
 private slots:
     void dialogButtonClicked(QAbstractButton *button);