MastoAPI: fake out 'application' property.

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -52,7 +52,10 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
       media_attachments: attachments,
       mentions: mentions,
       tags: [], # fix,
-      application: nil,
+      application: %{
+        name: "Web",
+        website: nil
+      },
       language: nil
     }
   end

test/web/mastodon_api/status_view_test.exs

@@ -36,7 +36,10 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
       media_attachments: [],
       mentions: [],
       tags: [],
-      application: nil,
+      application: %{
+        name: "Web",
+        website: nil
+      },
       language: nil
     }