Allow PDFs to be viewed in the browser without downloading

[steveharoz]

When viewing a preprint, there appears to be no simple way to view a PDF directly via the browser's PDF viewer. The only way is to download the PDF and then open it, which seems unnecessary. This is a major inconvenience for people who use plugins to help with reading, and it discourages reading because the google scholar link tries to download the file instead of opening it.

Perhaps there is a simple mime-type setting that would allow the "download" button to view the file rather than save it?

cc @domoritz

[eplebel]

+1