Generate gitpod url to config file and read in ContentSecurityPolicy.php

What does this MR do?

• Generate gitpod url to config file and read in ContentSecurityPolicy.php
• Moved urls generation in extra function

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

Links to related issues

How to test

1. run container in gitpod and on local env
2. are the urls in last startup message in terminal working?
3. No error messages in browser console from ContentSecurityPolicy?

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