Updates the installing page by transforming the supported OS list into a table which eases readability and maintenance a lot. The table is also updated to the latest version. Note that the OS are now ordered from latest first which additionally eases maintanability.
Removes the release notes page which is totally nuts here.
A new release notes page has been added in the main page where it belongs to, see referenced PR in docs-main
This PR:
Backport to 5.2
@tbsbdr fyi