Merge branch '217-category-selector-does-not-work' into 'develop'

Resolve "Category selector does not work"

Closes #217

See merge request t3o/typo3.org!230
3 jobs for 204-backlink-to-event-list-is-missing in 3 minutes and 38 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Test
passed test:php #10135

00:00:17

 
  Build
passed build #10136

00:01:58

 
  Layout
passed layout #10137

00:01:22