Merge branch 'master' of https://github.com/git-l10n/git-po

By Jiang Xin (2) and Ralf Thielow (1) via Jiang Xin * 'master' of https://github.com/git-l10n/git-po: l10n: Update German translation l10n: Update Simplified Chinese translation l10n: Update git.pot (33 new, 24 deleted messages)