Bug#378145: Please add image/png signature to /etc/apache2/magic

[Graham <graham.knap@gmail.com>]

Package: apache2-common
Version: 2.0.54-5

Please add an "image/png" signature to /etc/apache2/magic

I found this on the web and it seems to work:

# PNG images
0       string          \211PNG         image/png

This was useful for getting MediaWiki to properly recognize PNG
images, instead of erroneously treating them as "text/plain".

Thanks

-- graham