Initial FTB support. Allows "tracking" of FTB instances.

logic/LegacyFTBInstance.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "LegacyInstance.h"
+
+class LegacyFTBInstance : public LegacyInstance
+{
+	Q_OBJECT
+public:
+	explicit LegacyFTBInstance(const QString &rootDir, SettingsObject *settings,
+							   QObject *parent = 0);
+	virtual QString getStatusbarDescription();
+	virtual bool menuActionEnabled(QString action_name) const;
+};