Added batch size limit to reduce pymongo cursor errors
Added batch size limit to reduce pymongo cursor errors


Former-commit-id: f4b42f2c57f65a0be18ecc750d0866bb20bf8a74
JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView