- Do some refactoring

- Disable "My status" and "Exams"
- Add beta notice
- Add fallback view to dashboard urls
- Add excepts for network operations
- Comment and refactor

inspect hast du vermutlich nur zu Testzwecken verwendet

Apply merging of sub rows for HTML table, too | Refactor and comment | Add __eq__ to API objects to improve matching

add two funtions equal() and merge_subs() to summarise lessons with same attributes, there's some tidying up to do

rename class to aktuell in generate_pdf, exclude flags b (Verfügungsstunde) and F (Lehrerfrei) in get_substituitions_by_date