Update Danish translation from the Translation Project (as an exception still in 2.4 branch)

Note: This is hopefully the very last translation work that goes
into the 2.4 branch. All translation work should now go into 2.5 i.e. trunk.
See http://wiki.gnucash.org/wiki/Translation_Status

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/branches/2.4@22995 57a11ea4-9604-0410-9ed3-97b8803252fd