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

Conflicts:
	db/migrate/20170716191202_add_hide_notifications_to_mute.rb
	spec/controllers/application_controller_spec.rb

Took our version, upstream changes were only minor style linting.

lib/mastodon/settings_cli.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require_relative '../../config/boot'
+require_relative '../../config/environment'
+require_relative 'cli_helper'
+
+module Mastodon
+  class RegistrationsCLI < Thor
+    desc 'open', 'Open registrations'
+    def open
+      Setting.open_registrations = true
+      say('OK', :green)
+    end
+
+    desc 'close', 'Close registrations'
+    def close
+      Setting.open_registrations = false
+      say('OK', :green)
+    end
+  end
+
+  class SettingsCLI < Thor
+    desc 'registrations SUBCOMMAND ...ARGS', 'Manage state of registrations'
+    subcommand 'registrations', RegistrationsCLI
+  end
+end