Development: Rename database columns with keywords to be able to update liquibase

[krusche]

This is a back port of some changes in #8276 to the 6.9.x version, mainly to make sure all current database changes are available in the latest 6.9.x release so that they can be cleaned up in the 7.0.0 release (also see #8278)

Checklist

General

• This is a small issue that I tested locally and was confirmed by another developer on a test server.
• I chose a title conforming to the naming conventions for pull requests.

Server

• Important: I implemented the changes with a very good performance and prevented too many (unnecessary) database calls.
• I strictly followed the server coding and design guidelines.

Motivation and Context

Keep server dependencies up to date

Steps for Testing

Make sure all relevant checks pass

Testserver States

Note

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Green = Currently available, Red = Currently locked

Review Progress

Code Review

• Code Review 1
• Code Review 2

Manual Tests

• Test 1
• Test 2