update tobii lightbox to v3

Author: midzer

_includes/footer.html

@@ -95,9 +95,7 @@ <h2>{% t footer.foundation %}</h2>
 		});
 
 		// Initialize lightbox.
-		new Tobii({
-			zoom: false,
-		});
+		new Tobii();
 
 		// Update any download link to point to identified user's OS.
 		const links = document.querySelectorAll('.set-os-download-url');