tests: update for new in_reply_to_screen_name field

test/web/twitter_api/representers/activity_representer_test.exs

@@ -139,6 +139,7 @@ test "an activity" do
       "is_post_verb" => true,
       "created_at" => "Tue May 24 13:26:08 +0000 2016",
       "in_reply_to_status_id" => 213_123,
+      "in_reply_to_screen_name" => nil,
       "statusnet_conversation_id" => convo_object.id,
       "attachments" => [
         ObjectRepresenter.to_map(object)

test/web/twitter_api/views/activity_view_test.exs

@@ -36,6 +36,7 @@ test "a create activity with a note" do
       "favorited" => false,
       "id" => activity.id,
       "in_reply_to_status_id" => nil,
+      "in_reply_to_screen_name" => nil,
       "is_local" => true,
       "is_post_verb" => true,
       "possibly_sensitive" => false,