Merge branch 'feature/1952-read-muted-notifications' into 'develop'

Automatically mark notifications about statuses from muted users and threads as read

Closes #1952

See merge request pleroma/pleroma!2893

lib/pleroma/web/common_api/common_api.ex

@@ -465,7 +465,7 @@ defmodule Pleroma.Web.CommonAPI do
   end
 
   def thread_muted?(%User{id: user_id}, %{data: %{"context" => context}})
-      when is_binary("context") do
+      when is_binary(context) do
     ThreadMute.exists?(user_id, context)
   end