Remove bad link.

• Fix prompt: module spider can and should be invoked on login node
• Resolve #604 (closed)
• Could not find a (external) page with all installed modules
  • Long time ago, we decided against such a page within the compendium

added Content Refinement label

requested review from @rotscher--tu-dresden.de

assigned to @mflehmig--tu-dresden.de

changed the description

requested review from @s3248973--tu-dresden.de and removed review request for @rotscher--tu-dresden.de

approved this merge request

merged

mentioned in commit 589e5ad3