Media modal: attachment details: border around mime type icon

[iseulde]

Not sure if this is wanted or not, but it appears a bit strange.

[helen]

It would probably be better without them for mime type icons - does the markup allow to target them, though?

[iseulde]

No, but we can always add markup. :) Patch above. Not sure if this is a bug or enhancement.

[5um17]

We do not have any selector to target the parent as we have icon class only on image tag.
patch 27949.patch is removing class thumbnail which result in removing some css rules. better if we can add another class to div?

[5um17]

I am sorry i did not test well. 27949.patch seems good.

[wonderboymusic]

In 28369:

In the Attachment Details section of the media modal, only add box-shadow to images. Other mime-type icons look strange with an arbitrary border.

Props avryl.
Fixes #27949.