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

German and Chinese translation updates.

By Ralf Thielow (4) and others
via Jiang Xin (1) and Tran Ngoc Quan (1)
* git://github.com/git-l10n/git-po:
  l10n: Update translation for Vietnamese
  l10n: de.po: add additional newline
  l10n: de.po: translate 2 new, 3 fuzzy messages
  l10n: de.po: translate 41 new messages
  l10n: de.po: translate 265 new messages
  l10n: zh_CN.po: translate 2 new, 3 fuzzy messages
  l10n: Update git.pot (5 new, 3 removed messages)