💄 Add CSS to handle long file names
💄 Add CSS to handle long file names

During code review, @mauricioac highlighted the risk of a user uploading
an attachment with a super-long file name, thus causing user to render a
super-long hyperlink on the page.

This commit adds some CSS rules to ensure longer file names are
gracefully truncated using ellipsis.

bitzesty/qae,bitzesty/qae,bitzesty/qae,bitzesty/qae