Don't assume forge for FTB instances. Fix FTB related stuff.

logic/BaseInstance.h

@@ -51,6 +51,8 @@ public:
 	/// virtual destructor to make sure the destruction is COMPLETE
 	virtual ~BaseInstance() {};
 
+	virtual void init() {}
+
 	/// nuke thoroughly - deletes the instance contents, notifies the list/model which is
 	/// responsible of cleaning up the husk
 	void nuke();