[#1430] show package/resource revision_ids, disallow setting them
[#1534] if mimetype is none then fall back to provided mimetype
Merge remote-tracking branch 'origin/master' into fix-package-schema-revision_id
Merge branch 'master' into fix-package-schema-revision_id
Merge pull request #1534 from ckan/1534-fix-none-mimetype

Can't download resources with geojson extension