Update Job status log in live to the user

[musique88]

I don't know how realizable this is but I think it would be nice to have live-updating jobs logs.
That would make the progress of jobs that take a long time clearer to the user.

This would clearly require the use of WebSockets.

Again, I don't know yet how invasive that would be to the codebase.

I could work on it if interest on this idea is shown.