Univention Corporate Server 4.1 erratum 279 (bugfix)

This update addresses the following issue(s):
* When upgrading from a Non-Docker App to a Docker App, Join scripts of the
  Docker version are run last.
* Fixed automatically deleting files that Non-Docker Apps do not have in
  their App repository, but instead are installed as part of their packages.
* Database packages are marked as user installed when a Docker App has
  database integration.