Co-authored-by: Bert Wesarg <bert.wesarg@tu-dresden.de>

Co-authored-by: Jan Frenzel <jan.frenzel@tu-dresden.de>

- Improve structure of the subsection on restoring workspaces
  - Sketch general process
  - Add detailed example
- Mention expirer procesess in subsection of manual deleting of workspaces
- Minor wording improvements

- This is the(!) entry page for Data Life Cycle Managment, not
  filesystems in details
- Remove desc. of filesystem properties from this page; Is available in
  filesystem page

- Fix links; linkt to dataport nodes

- Remove outdated note on SSD storage
- Refine note on node-local storage

- Address reader/user

and romeo

- Slurm:
  - filesystem features removed, since they are currently not active
  - Add table with information on node-local storage for all clusters
- Beegfs_global0 removed from workspace setting table
- Rework some links
- Add new page on outdated filesystems in the archive and started moving content to this page

Respect it.