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

Conflicts:
- app/controllers/accounts_controller.rb
- app/controllers/follower_accounts_controller.rb
- app/controllers/statuses_controller.rb

All conflicts caused by the additional `use_pack` used for glitch-soc's theming
system.

db/migrate/20190317135723_add_uri_to_reports.rb

@@ -0,0 +1,5 @@
+class AddUriToReports < ActiveRecord::Migration[5.2]
+  def change
+    add_column :reports, :uri, :string
+  end
+end