7150: crash on backup or export


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23367 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6753: add long_days to DateStrings

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23368 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6753: add long_days to DateStrings

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23369 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
ignore sphinx built docs

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@23370 4ae1f11a-8b86-4847-b8af-ab372f36d1fd