Allow group "Redaktion" to edit the blog entries

Closes #34 (closed)

What does this MR do?

Gives permission to admins of the working group "Redaktion" to edit all blog entries.

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

Can't break anything

How to test

I added the group to the seed data and set userbot as admin of the group.

1. Checkout branch locally
2. Run ./scripts/seed
3. Login as userbot
4. In the menu "Administration" go to "Blogbeiträge bearbeiten"
5. Select one entry, click edit, change and save it
6. See if the blog entry did change

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
• used "state:" labels to track this MR's state until it was beta tested
• 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
  • 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

Administrator*innen der überregionalen AG "Redaktion" können Blogeinträge bearbeiten.