Merge branch '2.15.1' of https://github.com/ChrisADR/git-po into maint

* '2.15.1' of https://github.com/ChrisADR/git-po: l10n: Update Spanish translation

Jiang Xin committed Dec 5, 2017 at 21:32 UTC 09a659ccba044bd608f22b2293823947cc3e022b

No changes.