I don’t want to crush people’s hopes for a Firefox version, but please be aware that that is an extension. This can’t be made cross-platform like a userscript as it involves adding things to the right-click menu. So making a version that does the same on Firefox will require significantly more work. It’s not impossible though.
Version: 1.1
Updated: May 7, 2016
Known bug: You have to reload page to see fresh reports
Fixed bug: All reports was sent to world server, now reports are sending to current server (World / USA / Israel).