This PR will knock your socks off!

• Add more important stuff to glossary
• You can enter the bib without locking away your stuff
  • Also update bib opening hours
• Studierendensekreteriat is mostly online self-service now
• Move Wiskott to a variable
• Link updates
• Wording updates
• Updates
• Grammar
• Did you notice I am too tired to write a proper changelog

Fixes #5 (albeit badly imo)