Preserve muting preferences across reloads.

We have been persisting muting preferences on the back end for
a while, but we haven't been adding them to page_params for the
client to have at reload/startup time.

(imported from commit d9ca68aa0e4d22bfb0e6ce67fc0bc63981175c8b)

static/js/muting_ui.js

@@ -45,6 +45,10 @@ exports.handle_updates = function (muted_topics) {
     exports.rerender();
 };
 
+$(function () {
+    muting.set_muted_topics(page_params.muted_topics);
+});
+
 return exports;
 }());
 

zerver/lib/actions.py

@@ -1529,6 +1529,8 @@ def do_events_register(user_profile, user_client, apply_markdown=True,
         ret['realm_emoji'] = user_profile.realm.get_emoji()
     if event_types is None or "alert_words" in event_types:
         ret['alert_words'] = user_alert_words(user_profile)
+    if event_types is None or "muted_topics" in event_types:
+        ret['muted_topics'] = ujson.loads(user_profile.muted_topics)
 
     # Apply events that came in while we were fetching initial data
     events = get_user_events(user_profile, queue_id, -1)

zerver/views/__init__.py

@@ -708,6 +708,7 @@ def home(request):
         onboarding_steps      = ujson.loads(user_profile.onboarding_steps),
         staging               = settings.STAGING_DEPLOYED or not settings.DEPLOYED,
         alert_words           = register_ret['alert_words'],
+        muted_topics          = register_ret['muted_topics'],
         show_admin            = user_profile.show_admin,
         notify_for_streams_by_default = notify_for_streams_by_default(user_profile)
     ))