Fix translation of 'successful'

Closes #683 (closed)

Short description

"afgekeurd" -> "succesvol"

The actual text should actually be 'accepted' instead of 'successful' I think. And thus 'goedgekeurd'.

Looking at the code it seems there are two emails.
One saying "Renewal accepted" (translated "Verlenging goedgekeurd") and one saying "Renewal successful" (translated "Verlenging afgekeurd").
This MR changes the second translation to "Verlenging succesvol". The email saying "Verlenging goedgekeurd" is a different email.

Ah you're right, I just assumed that it was the 'approved' email here.

mentioned in commit 25937476

merged

changed milestone to %1.17

added registrations label

added bug and removed technical change labels

added i18n label