Popup feedback / bug report on every page

Hi, could you recommend me some plugin, which will be placed on every page and on click it will be something like "report that something is wrong with this page" + possibility of write some short message / "? Ideally it passes to the message as well the url of the page. We have migrated a large site and we'd like to get feedback from our clients.

I've found this, it looks good, but I'd like to get url automatically: