Add OpenAPI annotations for rrules and settings

Added some missing OpenAPI annotations for rrule and settings. Not sure if that's intended or the right way - please check.

(and it reverts commit 789cf19c which was just used for testing the merge policies)

changed milestone to %1.0-alpha4 — Raving Raccoon

requested review from @eigenwijsje

assigned to @chrizz

changed title from add OpenAPI annotations for rrules and settings to Add OpenAPI annotations for rrules and settings

mentioned in issue #204 (closed)

Test succeeds - so removed skip mark

Thanks!

approved this merge request

mentioned in commit 2dfb2d71

merged