Fix dimensions details (#1636)

The dimensions details should now display the image's natural size.

Apparently since its introduction by commit
e891d02, the dimensions details have
divided the image's natural size by the the zoom factor. I'm not sure
why this was done. *Multiplying* by the zoom factor would at least
compute the displayed size (although I think this is a less desirable
metric to show than the natural size). But dividing doesn't seem to
produce any sensible metric.

Author: runer112

js/hoverzoom.js

@@ -2298,7 +2298,7 @@ var hoverZoom = {
         function getSrcDetails(link) {
             let details = {};
             if (!srcDetails.audio || srcDetails.video) {
-                if (srcDetails.naturalWidth) details.dimensions = Math.round(srcDetails.naturalWidth / parseInt(options.zoomFactor)) + 'x' + Math.round(srcDetails.naturalHeight / parseInt(options.zoomFactor));
+                if (srcDetails.naturalWidth) details.dimensions = srcDetails.naturalWidth + 'x' + srcDetails.naturalHeight;
                 if (srcDetails.naturalWidth) details.ratio = getImgRatio(srcDetails.naturalWidth, srcDetails.naturalHeight);
                 let displayedWidth = imgFullSize.width() || imgFullSize[0].width;
                 if (srcDetails.naturalWidth) details.scale = Math.round(100.0 * displayedWidth / srcDetails.naturalWidth) + '%';