l10n: zh_CN.po: translate 323 new messages

Update Simplified Chinese translation for 134 fuzzy, 189 new messages
from Git v1.7.10.2-548-g9de96.

Signed-off-by: Jiang Xin <[email protected]>
Signed-off-by: Zhuang Ya <[email protected]>

Author: jiangxin