removing actie from system.
remove now-unused javascript rabat-calculator.

This used to calculate the "rabat", korting, if people
used it.
remove data-price entity; was used for js to calculate rabat.
remove css for rabat;
Cleanup of leftover actie-keuze code.
Merge branch 'feature/actieweg' into develop

* feature/actieweg:
  Cleanup of leftover actie-keuze code.
  remove css for rabat;
  remove data-price entity; was used for js to calculate rabat.
  remove now-unused javascript rabat-calculator.
  removing actie from system.
Merge branch 'release/0.9.0'

* release/0.9.0:
  Cleanup of leftover actie-keuze code.
  remove css for rabat;
  remove data-price entity; was used for js to calculate rabat.
  remove now-unused javascript rabat-calculator.
  removing actie from system.