Display current polls on Dashboard

Part of #975

What does this MR do?

Active polls the user hasn't yet participated in are displayed on the dashboard.

How confident are you it won't break things if deployed?

Confident

How to test

1. Checkout branch locally
2. Login as any foodsaver and check dashboard
3. create more polls (uservoting1@example.com)
4. check the different styles for not started, default and soon ending polls.

Screenshots (if applicable)

Checklist

• added a test, or explain why one is not needed/possible...
• no unrelated changes
• asked someone for a code review
• set a "for:" label to indicate who will be affected by this change
• added to the next milestone (see https://gitlab.com/foodsharing-dev/foodsharing/-/milestones, unless it has a "for:Dev" label)
• added an entry to CHANGELOG.md
• added a short text that can be used in the release notes
• Once your MR has been merged, you are responsible to create a testing issue in the Beta Testing forum: https://foodsharing.de/?page=bezirk&bid=734&sub=forum. Please change the MRs label to "state:Beta testing".
  • Consider writing a detailed description in German.
  • Describe in a few sentences, what should be tested from a user perspective.
  • Also mention different settings (e.g. different browsers, roles, ...) how this change can be tested.
  • Be aware, that also non technical people should understand.

Release notes text in German

Abstimmungen, an den Nutzer*innen noch nicht teilgenommen haben, werden auf dem Dashboard angezeigt.