Add delete to TwAPI representer correctly.

lib/pleroma/web/twitter_api/representers/activity_representer.ex

@@ -100,7 +100,8 @@ def to_map(%Activity{data: %{"type" => "Delete", "published" => created_at, "obj
     created_at = created_at |> Utils.date_to_asctime
 
     %{
-      "id" => activity.data["object"],
+      "id" => activity.id,
+      "uri" => activity.data["object"],
       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
       "attentions" => [],
       "statusnet_html" => "deleted notice {{tag",
@@ -135,6 +136,7 @@ def to_map(%Activity{data: %{"object" => %{"content" => content} = object}} = ac
 
     %{
       "id" => activity.id,
+      "uri" => activity.data["object"]["id"],
       "user" => UserView.render("show.json", %{user: user, for: opts[:for]}),
       "statusnet_html" => HtmlSanitizeEx.basic_html(content) |> Formatter.finmojifiy,
       "text" => HtmlSanitizeEx.strip_tags(content),

lib/pleroma/web/twitter_api/twitter_api.ex

@@ -265,6 +265,12 @@ defp activity_to_status(%Activity{data: %{"type" => "Announce"}} = activity, opt
     ActivityRepresenter.to_map(activity, Map.merge(opts, %{users: [user, announced_actor], announced_activity: announced_activity}))
   end
 
+  defp activity_to_status(%Activity{data: %{"type" => "Delete"}} = activity, opts) do
+    actor = get_in(activity.data, ["actor"])
+    user = User.get_cached_by_ap_id(actor)
+    ActivityRepresenter.to_map(activity, Map.merge(opts, %{user: user}))
+  end
+
   defp activity_to_status(activity, opts) do
     actor = get_in(activity.data, ["actor"])
     user = User.get_cached_by_ap_id(actor)