small css issue

[shalmaxb]

I have images in list and detail view. these can be opended by a modal. The image in this modal has only "max-width: 100%", but no height. This causes, that large images will be cut off at the bottom.
I added in client\res\templates\modals\image-preview.tpl to show the whole image: "height: 90vh"

I guess, this is not update safe, but would be nice if it was implemented in that file.
Thank you!