Add webfinger and basic feed support.

test/web/ostatus/ostatus_controller_test.exs

@@ -0,0 +1,15 @@
+defmodule Pleroma.Web.OStatus.OStatusControllerTest do
+  use Pleroma.Web.ConnCase
+  import Pleroma.Factory
+  alias Pleroma.User
+
+  test "gets a feed", %{conn: conn} do
+    note_activity = insert(:note_activity)
+    user = User.get_cached_by_ap_id(note_activity.data["actor"])
+
+    conn = conn
+    |> get("/users/#{user.nickname}/feed.atom")
+
+    assert response(conn, 200)
+  end
+end