Merge branch 'master' of https://github.com/LMFDB/lmfdb
Moved some of the content on finding zeroes to a new file
Merge branch 'master' of https://github.com/LMFDB/lmfdb into lzeros
Update upload code to use newer bson.objectid and fallback to mongodb.objectid if need be. Reorganize files for testing the uploads
Merge branch 'lzeros' of github.com:pdehaye/lmfdb

* 'lzeros' of github.com:pdehaye/lmfdb:
  Moved some of the content on finding zeroes to a new file