Merge branch 'maint' of git://github.com/git-l10n/git-po into maint

By Ralf Thielow (6) and others via Jiang Xin * 'maint' of git://github.com/git-l10n/git-po: l10n: zh_CN.po: translate 1 new message l10n: de.po: translate one new message l10n: de.po: unify translation of "ahead" and "behind" l10n: de.po: collection of improvements l10n: de.po: translate "remote" as "extern" l10n: de.po: translate "track" as "beobachten" l10n: add new members to German translation team l10n: de.po: collection of suggestions l10n: de.po: translate "bad" as "ungültig" ("invalid") l10n: de.po: hopefully uncontroversial fixes l10n: de.po: translate "bare" as "bloß" l10n: Update git.pot (1 new messages)