[1.0.X] Fixed #9569, #9636: Updated Simplified Chinese translation.

Backport of r9721 and r9722 from trunk (with makemessages re-run to ensure the
line numbers match on the branch).

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9723 bcc190cf-cafb-0310-a4f2-bffc1f526a37