FEATURE: Support an end date for user silencing

app/serializers/admin_detailed_user_serializer.rb

@@ -18,6 +18,7 @@ class AdminDetailedUserSerializer < AdminUserSerializer
              :can_be_anonymized,
              :suspend_reason,
              :suspended_till,
+             :silence_reason,
              :primary_group_id,
              :badge_count,
              :warnings_received_count,
@@ -29,6 +30,7 @@ class AdminDetailedUserSerializer < AdminUserSerializer
   has_one :approved_by, serializer: BasicUserSerializer, embed: :objects
   has_one :api_key, serializer: ApiKeySerializer, embed: :objects
   has_one :suspended_by, serializer: BasicUserSerializer, embed: :objects
+  has_one :silenced_by, serializer: BasicUserSerializer, embed: :objects
   has_one :tl3_requirements, serializer: TrustLevel3RequirementsSerializer, embed: :objects
   has_many :groups, embed: :object, serializer: BasicGroupSerializer
 
@@ -72,6 +74,14 @@ class AdminDetailedUserSerializer < AdminUserSerializer
     object.suspend_record.try(:acting_user)
   end
 
+  def silence_reason
+    object.silence_reason
+  end
+
+  def silenced_by
+    object.silenced_record.try(:acting_user)
+  end
+
   def include_tl3_requirements?
     object.has_trust_level?(TrustLevel[2])
   end