Logs for debugging flaky test & rerun of failing container in specific order

[jonbulz]

Short description

• Add logs in poi_category_form_view and test_poi_category_form_view to debug flaky test_no_changes_were_made_message. The intention is to remove the log statements before the next release
• Set up the test job inside config.yml so that we can run a container that contains exactly the tests in the exact order of when this container failed before

Proposed changes

• debug logs in poi_category_form_view to see if the message is created

• debug logs in test_poi_category_form_view to see the rendered html

• prettify response content to make the html readable in the logs

• log handler for tests

• WIP: find a way to have specific tests run in a specific order

Side effects

• probably clutters our logs if this is ever deployed

Faithfulness to issue description and design

There are no intended deviations from the issue and design.

How to test

Resolved issues

Fixes: #

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Pull Request Review Guidelines

[JoeyStk]

Thank you very much! LGTM! 🚀

[hannaseithe]

I might have been able to fix the failing tests with #3950. But I want to use this branch still for figuring out a way to run specific tests inside a container with a specific order (so that we can force a fail that depends on the order of a container). Therefore I will adjst the description and keep the PR as draft

[MizukiTemma]

As solved by #3950 and agreed here: https://chat.tuerantuer.org/digitalfabrik/pl/y5tq9efefig75estwqzy5rx4me