fix: lazy load on option images

[loge5]

When using the option "images" (for passing an array of images instead of scanning elements for the URLs) the option lazy did not work.

There was a small mistake by calling the itemTemplate method: The argument lazy was passed as second item not third. With this fix the lazy load is working, but captions still not (as before).

I would be very happy when a new version could be rolled out as soon as possible.