Add download rate to media progress bar (non http mode only!)

Minor coding style fixes

src/client.h

@@ -433,6 +433,8 @@ class Client : public con::PeerHandler, public InventoryManager, public IGameDef
 	void afterContentReceived(IrrlichtDevice *device, gui::IGUIFont* font);
 
 	float getRTT(void);
+	float getCurRate(void);
+	float getAvgRate(void);
 
 	// IGameDef interface
 	virtual IItemDefManager* getItemDefManager();