Pin elasticutils at 0.9.1 and elasticsearch at 0.4.5

The requirements file has elasticutils pulling from a github-hosted
tarball. The commit is the one tagged with v0.9.1.

This changes the requirements file to pull version 0.9.1 from pypi
rather than the github-hosted tarball.

Similarly for elasticsearch-py.
[bug 1071565] Update ElasticUtils to 0.10.1

* update ElasticUtils to 0.10.1
* update elasticsearch-py to 1.2.0
* remove lots of calls to .values_dict() so that we're returning
  DefaultMappingTypes instead of calling .values_dict() with no
  arguments which now returns just the document type and id
* wrote reshape and some code to handle reshaping results to deal
  with the fact that values in search results executed with
  .values_list() or .values_dict() are now always lists
* removed the verify object code in the es_verify_cmd--seems like
  we don't need it anymore, it takes hours to run and it wasn't
  working