Bypass browser cache on reloading image with the same name.

Not sure if its good, the intention was to have reloading changed images with the same name working on electron. Could this be bad for browser games in terms of loading time?

Backends/HTML5/kha/LoaderImpl.hx

@@ -36,7 +36,7 @@ class LoaderImpl {
 			img.onerror = function(event: Dynamic) failed({url: desc.files[0], error: event});
 			img.onload = function(event: Dynamic) done(Image.fromImage(img, readable));
 			img.crossOrigin = "";
-			img.src = desc.files[0];
+			img.src = desc.files[0] + '#' + Date.now().toString();
 		}
 	}