Enlarge image - always show close option

@david
It would be great if the “close option” represented by a X is always available when an image is enlarged. Right now it only appears when the image is not enlarged.

I have had a case where the image was enlarged that much so the screen was all black and I didn’t realize that the app hadn’t crashed but actually just showing a very enlarged image.

Showing part of original image

Showing very enlarged image

Approved! And also catch the back key press event with the enlarged image closure, instead of the app exit :slightly_smiling_face: