I have implemented the old firebug2 events tab in firebug3.
It also shows the delegated events from jQuery which the current devtools and firebug3 do not show (it was a missing feature), now its there.
@janodvarko @fflorent
I cant push a commit here, seems like this branch is closed, can you port it to the new devtools with the integrated firebug? Files are attached, just 3 (2 new, 1 modified)

/lib/inspector/events-list.js
/lib/inspector/inspector-overlay.js
/lib/data/events-list/events-list.html
The code might not be up to the current standards but it works perfectly well, i also had to do a combination of the jQuery data events and the native frontNode events because the frontNode ones do not provide the "selector" information to match delegated events, this is something that would probably need to be requested to add in the firefox devtools.