Rework notification page
This merge request contains two things. I cannot test it because I have a compatibility problem, but seems trivial (distro based on "only" Ubuntu 22.04) :
- Switch position of favorite/boosted in notification list, to fit the order of the post view (reply/boost/favorite)
- Use
chart-bar
as a more relevant icon for polls
As always, I use "Mr. Athozus" on this GitLab cause I'm too young to reveal my real name ;)