Additional privileges for instructors

• Add Medical notes (not remove)
  • read
  • edit is not supported anyway
• View and edit notes of extensions
  • viewing
  • editing these is REALLY REALLY hard... as this is the ONLY field that works differently. I really do not wanna change this.
• Edit topic wishes
  • editing these EVEN HARDER than notes, because it is an array field that would need editing, which is EXORBITANTLY more connected and involved than only the one edge case for notes...
• Remove any access to address data for instructors (in particular Korrespondenzzirkel). #65 (comment 2277888159)
  • As there is no longer any postal delivery, instructors do not need access to the following fields:
    • street
    • streetNumber
    • postalCode
    • city
    • country