Follow-up from Search improvements

Addresses some of the todos listed in #1728

What does this MR do?

Resolves the following problems identified in beta testing:

• It should not be possible to search for single letter words only (like "e e e") because it causes severe search times
• Buddy status is not displayed
• Some mail addresses get displayed as xyz@foodsharing.network@foodsharing.network
• Some search queries result in server errors
• Display if users are verified
• Sort chats by Number of members
• Allow searching for word starts or whole words like "Anne (returning in "Anneke" but not "Marianne") or "Anne" (returning only "Anne")
• Allow searching for last names, given the full name or at least 4 chars

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

quite confident. Not sure though, if it fixes the server error an all search queries.

Screenshots (if applicable)

Display if users are unverified

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 in the release notes to /release-notes/YYYY-MM.md
• 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.

Closes #1728