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

Conflicts:
	app/models/status.rb
	db/migrate/20180528141303_fix_accounts_unique_index.rb
	db/schema.rb

Resolved by taking upstream changes (no real conflicts, just glitch-soc
specific code too close to actual changes).

db/post_migrate/20180813113448_copy_status_stats_cleanup.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class CopyStatusStatsCleanup < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    safety_assured do
+      remove_column :statuses, :reblogs_count, :integer, default: 0, null: false
+      remove_column :statuses, :favourites_count, :integer, default: 0, null: false
+    end
+  end
+end