6236: display issue by using cairo under linux too

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@21642 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6516: update Danish translation (contribution by lklundin)

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@21643 4ae1f11a-8b86-4847-b8af-ab372f36d1fd