Translation of categories and indicators

[maaikevanleuken]

The following things need to be translated:

• [x] 'Expert-level questions' to 'Expert vraag'
• [x] 'Resultaten' to 'Results' for going to the results page
• [x] The categories of questions:
  1. I've translated the categories in the scoring matrix (done)
  2. These should be parsed from excel to js (Sam)
  3. These should be read in in the implementation (Bas)
     • [x] 'Results' to 'Resultaten' on the results page