Via the UI JIRA only allows bitmap issue type icon uploads. However, JIRA 7 comes with prepackaged SVG (vector) issue type icons.
How can I add additional SVG files as selectable issue type avatars in JIRA? Just dropping them into /images/icons/issuetypes doesn't work after restarting JIRA. I've added both an SVG file and a same-named 16x16 PNG file.