UI Proposal: Show participants on hover #4136

⚠️ This issue respects the following points: ⚠️

• I agree to follow Nextcloud's Code of Conduct.

Describe the goal you'd like to achieve

As a poll participant or owner, I want to easily get an overview about who has voted for what, because helps to select the accepted option (in case of a par, one participant might be more important) or to contact other people that voted for the same option.

Describe possible solutions

Show participants on hover

In the list view, it's currently not possible at all to see who voted for what. I propose that hovering over the "voted" / "voted maybe" icons shows the profile pictures of the users that voted for that option. Possible solutions are a proper popup or displaying a scrollable list (including profile picture & name) or using the space between option text on the left and vote count on the right to display a (possibly trunacted) list of overlapping profile pictures.

I admit that showing the users in the list view is much harder and the two solutions I proposed both have different drawbacks.

Additional context

Split from #3322 as follow-up for more fine-grained tracking.