graphlab exec should handle any sub-command failing out
Use the correct backend name for elasticsearch
switch ElasticSearchController to use the ElasticSearch client library
_vertexId index should index by a String data type
Sort the vertex property columns and filter _vertexId
Fix faunus edge degrees service

It turns out we can't do edge counting in one pass. Instead we
need to have one pass count the edges, and the other to filter
them out. Unfortunately we can't use binary sequence files
as our intermediate format because of this bug:

https://github.com/thinkaurelius/faunus/issues/170
Minor cleanup
Don't duplicate the port
Make sure to delete the tmp dirs
Merge pull request #75 from erickt/cleanup

A hodge podge of fixes and cleanups