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

Conflicts:
- app/controllers/statuses_controller.rb
  minor conflict because of glitch-soc's theming system
- app/controllers/stream_entries_controller.rb
  minor conflict because of glitch-soc's theming system

db/migrate/20190509164208_add_by_moderator_to_tombstone.rb

@@ -0,0 +1,5 @@
+class AddByModeratorToTombstone < ActiveRecord::Migration[5.2]
+  def change
+    add_column :tombstones, :by_moderator, :boolean
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_04_20_025523) do
+ActiveRecord::Schema.define(version: 2019_05_09_164208) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -688,6 +688,7 @@ ActiveRecord::Schema.define(version: 2019_04_20_025523) do
     t.string "uri", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "by_moderator"
     t.index ["account_id"], name: "index_tombstones_on_account_id"
     t.index ["uri"], name: "index_tombstones_on_uri"
   end