fixes #155
Remove manual transactions when deleting tags.

Handling the transactions manually creates the possiblity
of unclosed transactions as reported here:
http://askbot.org/en/question/11230/errors-while-trying-to-rename-or-delete-unused-tags/

However, there's no need to do this manual handling; the simplest
solution is to just remove the decorator.

Also added tests.
Append help msg + noinput option to add_admin management command
Oauth2: Facebook: Fix email not found
Added support for directly posting as anonymous with recaptcha
Fix database connection issues in prefork mode.

When running in prefork mode, open DB connection got shared between the
child process as DB was accessed very early in the init process. One
child would then close the connection and cause others to fail. To fix
this, connection.close() was added to the end of startup procedures.
Close cache after startup procedures

Same as with DB connection, the cache connection gets shared between child
processes in prefork mode if it isn't closed after startup procedures
Fix 500 template processing error
Allow customization of the destional URL for the logo image

Chinese locale message for since you are not logged in right now ...
Updated requirements of django-celery to >=3.0.11
added recaptcha to the openid registration form
added recaptcha on posts + first pass on watched user status
recaptcha seems to work
removed/disabled checking of avatar type synchronously as there were timeouts contacting gravatar server
added recaptcha remote ip decorators to the recaptcha protected views
fixed captcha issue when posting question
added remote ip fixer middleware
removed unnecessary class from signup button
fixes broken subscribed tags editor on the user profile subscriptions tab and removes unused class from buttons
hopefully fixed issue with the deletion of the login method under https