Fix one or more of the issues reported by Flake8.

This issue is not something which will be fixed by one PR. Instead, it is servers as a pointer to the list of ignored warnings in the source code. Pick one or more issues or files, fix them, and submit a PR.

Getting the existing issues to fix

1. Go to the source code.
2. Find one of the .flake8 files in the source tree.
3. See the `

It would be nice to have a possibility to specify a project version which can be seen in the version endpoint.
Maybe the version can been set via an environment variable and if it is set, it will be displayed by requesting e.g. https://actinia.mundialis.de/api/v1/version.
It cood look like this:

{
      "grass_version": {...},
      "plugin_versions": {...},
      "plugins": "actinia_

Urban design projects might be time-bound, such as when the project has start and (planned) completion dates. Likewise, projects have various statuses, like

• planning
• development
• cancelled
• complete/finished

Design a feature allowing project owners to document project status and key dates.