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

By Byrial Jensen (2) and others via Jiang Xin (1) and Ralf Thielow (1) * 'maint' of https://github.com/git-l10n/git-po: l10n: Initial German translation l10n: Update Simplified Chinese translation l10n: Update git.pot (2 new messages) l10n: Add the German translation team and initialize de.po l10n: Add Danish team (da) to list of teams l10n: New da.po file with 0 translations l10n: Updated pt_PT language