Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/lib/feed_manager.rb`:
  Not a real conflict, glitch-soc-only DM-related method
  too close to changed upstream stuff.
  Ported upstream changes.
- `app/services/batched_remove_status_service.rb`:
  Additional logic in glitch-soc to clear DMs from timelines.
  Ported upstream changes and fixed the DM TL clearing logic.
- `app/workers/scheduler/feed_cleanup_scheduler.rb`:
  Additional code in glitch-soc to clear DM timelines.
  Ported upstream changes.

spec/services/batched_remove_status_service_spec.rb

@@ -26,6 +26,11 @@ RSpec.describe BatchedRemoveStatusService, type: :service do
     subject.call([status1, status2])
   end
 
+  it 'removes statuses' do
+    expect { Status.find(status1.id) }.to raise_error ActiveRecord::RecordNotFound
+    expect { Status.find(status2.id) }.to raise_error ActiveRecord::RecordNotFound
+  end
+
   it 'removes statuses from author\'s home feed' do
     expect(HomeFeed.new(alice).get(10)).to_not include([status1.id, status2.id])
   end
@@ -38,10 +43,6 @@ RSpec.describe BatchedRemoveStatusService, type: :service do
     expect(Redis.current).to have_received(:publish).with("timeline:#{jeff.id}", any_args).at_least(:once)
   end
 
-  it 'notifies streaming API of author' do
-    expect(Redis.current).to have_received(:publish).with("timeline:#{alice.id}", any_args).at_least(:once)
-  end
-
   it 'notifies streaming API of public timeline' do
     expect(Redis.current).to have_received(:publish).with('timeline:public', any_args).at_least(:once)
   end