Modifed Pyes file to work around error.

Pyes throws an error if Django's installed, but it can't find config. When the MCP
does indexing, it should not be Django-dependent.

There's a fix for this error, but not yet in a release, so I modified Pyes.

https://github.com/aparo/pyes/commit/2cb1b70f2ab9be246cd3a05a975fd383ce253c5e