gnucash maint: update de.po to commit ce71586

[Frank H.Ellenberger]

Updated	 via  https://github.com/Gnucash/gnucash/commit/fb26ef64 (commit)
	from  https://github.com/Gnucash/gnucash/commit/ce715862 (commit)



commit fb26ef648ed74998e4a25fcdfac282dcd7650c0e
Author: fell <frank.h.ellenberger at gmail.com>
Date:   Mon Feb 19 12:17:53 2018 +0100

    update de.po to commit ce71586
    
    4684 translated messages, 5 untranslated messages.



Summary of changes:
 po/de.po | 49 +++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 43 insertions(+), 6 deletions(-)