Filesystem feature not working: add warning and hint

See merge request !1058

Follow Noah's sugesstions in !1054

See merge request !1056

Update Access and Login Pages

See merge request !1054

- Use hint boxes for steps in Jards
- Consistent usage of note boxes for application ways
- Fix indent

- Spell: Use "NHR Center" as on ZIH web site
- Lint:
  - Fix line length and compact lines where useful
  - newline after headings
  - Remove level five headings for styling
layout: Avoid arrows; connect links and desc. using linking words

Generic placeholders

See merge request !1053

Merge branch 'application_update_apr2024' of gitlab.hrz.tu-chemnitz.de:zih/hpcsupport/hpc-compendium into application_update_apr2024

Having it in separate pages is advantageous for e.g. w.r.t. maintenance,
search, structure.

I cannot see, how merging this contents into own pages, helps to improve
search and structure.

Having it in separate pages is advantageous for e.g. w.r.t. maintenance,
search, structure.

I cannot see, how merging this contents into own pages, helps to improve
search and structure.

- /doc.zih.tu-dresden.de/docs/application/misc/nhr_project_acces1.jpg
- /doc.zih.tu-dresden.de/docs/application/misc/nhr_project_access1.jpg