[thorinaboenke]

Task

#261

Description

renames api endpoints from /admin to /api/v1, as well as respective handlers and variables

How Has This Been Tested?

all unittests pass

Checklist

• This Pull-Request goes to the development branch.
• I have successfully run prek locally.
• I have added tests to cover my changes.
• I have linked the issue-id to the task-description.
• I have performed a self-review of my own code.

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