Chore: Mandatory change in licensing

[eschrewe]

Description

• inserted the requested changes as demanded in Mandatory change in licensing and legal documentation #430
• does not fully solve the above mentioned issue, since there are still open questions, which are currently unanwered

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[tom-rm-meyer-ISST]

Thanks! Please also update NOTICE.md in folders frontend and backend.

I meanwhile check if this change also influences the docker notice and the file ending of the documentation files (see comment, gonna ask tomorrow in office hour)

[tom-rm-meyer-ISST]

@eschrewe the questions pointed out will be adressed next week. For now no need to update

• the docker notice
• the documentation footer

[eschrewe]

Thanks! Please also update NOTICE.md in folders frontend and backend.

I meanwhile check if this change also influences the docker notice and the file ending of the documentation files (see comment, gonna ask tomorrow in office hour)

I updated the NOTICE.md in the backend folder. The frontend folder does not contain a NOTICE.md.

Since we don't know for sure, whether individual NOTICE.md in /frontend and /backend folder are required at all, Malte decided that we leave the /frontend folder as it currently is and merge that branch in order to meet the deadline tomorrow.

I will take over the review due to unavailability of tom-rm-meyer-ISST.

[mhellmeier]

The open points mentioned by @tom-rm-meyer-ISST and @eschrewe have to be considered but shouldn't block this PR.