Translate German comments and terms in sc/source/core and sc/source/ui

Change-Id: I214565e73893688963d99c0f0ddfc356b5ad63be
Reviewed-on: https://gerrit.libreoffice.org/36107Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>