media modal: add support for media descriptions

3 jobs for feature/image-description-authoring in 3 minutes and 23 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Lint
passed #17525
lint

00:00:55

 
  Build
passed #17526
build

00:01:18

 
  Test
passed #17527
test

00:01:10