Move model into new contrib repo and break into model/schema. This is
in preparation for Windows 7 port where we don't have rethinkdb and
the schema doesn't need it anyway.
For Windows port move some code to different repos.
Merge branch '200-upload-new-file' of github.com:materials-commons/materials into 200-upload-new-file

Conflicts:
	mcfs/request/lookup.go