Let users delete their own votes

[diemelone]

Is your feature request related to a problem? Please describe.
Not a problem yet, but I haven't created many polls either

Describe the goal you'd like to achieve
Users should be able to delete their own vote without asking the admin to do so

Describe alternatives you've considered
none

Describe possible solutions
A small button that just says "delete"

Additional context

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.