gnucash maint: Import new Spanish translation from the Translation Project

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/4533f779 (commit)
	from  https://github.com/Gnucash/gnucash/commit/adba439b (commit)



commit 4533f77904ce54f0438e48fe41510eda6d7261b6
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Thu Jan 25 21:15:21 2018 +0100

    Import new Spanish translation from the Translation Project



Summary of changes:
 po/es.po | 13367 +++++++++++++++++++++++++++++++------------------------------
 1 file changed, 6752 insertions(+), 6615 deletions(-)