Add Werkzeug.
Modify diff.py and remove duplicate code
Merge pull request #18 from dongweiming/modify_diff

Modify diff.py and remove duplicate code
Move repo to douban/code.
Add session.
Update user key index.
Add docutils.
Remove quixote session publisher.
Add dependency.
Rename tdt to context.
Refactor format rfc822 datetime.
Add pip dependency.
Merge pull request #19 from xtao/wsgi

Add session.
Move code to vilya.
Merge pull request #24 from xtao/vilya

Move code to vilya.
Add debug mode.
Bugfix:

1. When st 404.html not display user info
2. Display error message is '???'
Merge pull request #27 from xtao/vilya

Add debug mode.
Merge pull request #28 from dongweiming/bugfix_error_html

Bugfix:
modify setup_databases for now