Fixed zip on empty iterator bug
Merge branch 'master' of https://github.com/matfed/CoAnSys
Merge branch 'master' of https://github.com/matfed/CoAnSys
Merge branch 'master' of https://github.com/matfed/CoAnSys
filter out empty-key documents
fixing pages
Less reusable but working
fixing nonexistent entities bug
fixing