changing "verantwortliche foodsaver" to "Ansprechpartner" in foodsharepoint

What does this MR do?

changes the name in a fair-share point from "verantwortliche foodsaver" to "Ansprechpartner" (Board Decission)

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

Quite

Links to related issues

How to test

Steps a reviewer can take to verify that this MR does what it says it does e.g.

1. Checkout branch locally
2. Login as foodsaver
3. Go to -> Göttingen Fairteiler
4. Pick a any fairteiler
5. Check the name to "Ansprechpartner"

Review for Edit-page

1. Checkout branch locally
2. Login as ambassador
3. Go to -> Göttingen Fairteiler
4. Pick a any fairteiler
5. Go to "fairteiler bearbeiten"
6. Scroll down and look at the text for "Ansprechpartner" for fair share points

Screenshots (if applicable)

Edit FSP

Checklist

• added a test, or explain why one is not needed/possible...
• no unrelated changes
• asked someone for a code review
• joined #foodsharing-beta channel at https://slackin.yunity.org
• added an entry to CHANGELOG.md (description, merge request link, username(s))
• Once your MR has been merged, you are responsible to update the #foodsharing-beta Slack channel about what has been changed here. They will test your work in different browsers, roles or other settings