Add deleted in r732 (don't know why) functionality that displays custom Error page when linkname in Developer User Profile url doesn't exist (/site/user/profile/<not_existing_linkname>).
Patch by: Pawel Solyga
Review by: to-be-reviewed
application: guestbook
version: 1
runtime: python
api_version: 1
handlers:
- url: .*
script: guestbook.py