[o] Use other web server instead of django run-server.
[o] Photo upload screen should show already uploaded photo if it exists. [o] The big photo should be displayed when a user clicks the photo.
[] Have a nice domain.
[o] id(nickname) limit:
- unique
- name length limit
- character limit
[] Url refactoring for multi-user.
[] Be ready for too big image.
[] Hide praises at admin page.
[] Direct log out.