[FEATURE] - show evidence in ban approval view

[janssensjelle]

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply.

• Bugfix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality not to work as expected).
• Documentation Update (if none of the other choices applies).

Proposed changes

This will alter the ban approval view a bit by adding the evidence field from #114 in the overview. Also fixes the failing tests due to a missing mock from the evidence field.

Checklist

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• I have read and followed the CONTRIBUTING.md
  doc.
• Lint and unit tests pass locally with my changes.
• I have added the necessary documentation (if appropriate).

Additional context

[janssensjelle]

Closing this PR will reopen new one when fixed correctly