Break out a separate mute modal with a hide-notifications checkbox.

app/javascript/mastodon/reducers/index.js

@@ -14,6 +14,7 @@ import local_settings from '../../glitch/reducers/local_settings';
 import push_notifications from './push_notifications';
 import status_lists from './status_lists';
 import cards from './cards';
+import mutes from './mutes';
 import reports from './reports';
 import contexts from './contexts';
 import compose from './compose';
@@ -37,6 +38,7 @@ const reducers = {
   local_settings,
   push_notifications,
   cards,
+  mutes,
   reports,
   contexts,
   compose,