Merge branch 'notifications-is-seen' into 'develop'

MastoAPI notifications is_seen

See merge request !934
3 jobs for develop in 4 minutes and 17 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Lint
passed #20389
lint

00:00:57

 
  Test
passed #20390
unit-testing

00:02:18

 
  Analysis
passed #20391
analysis

00:01:00