6665: New errors when using pygobject 3.8: Cannot get n_columns on flatbasemodel


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@22245 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
move five files with translatable strings out of POTFILES.skip

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@22247 4ae1f11a-8b86-4847-b8af-ab372f36d1fd