Merge git://github.com/git-l10n/git-po

By Jiang Xin (3) and others via Jiang Xin (3) and Ralf Thielow (1) * git://github.com/git-l10n/git-po: l10n: de.po: translate 3 new messages l10n: zh_CN.po: translate 3 new messages l10n: pt_PT.po translate new messages l10n: Update git.pot (8 new, 4 removed messages) l10n: Update git.pot (3 new, 2 removed messages)