Fix typo Nate caught in Galaxy.
Update Galaxy utilities classes through Galaxy changeset 5fac4d4.

Various fixes, doc updates, etc... as well as allowing dependency_resolvers_config_file and job_metrics_config_file to point at YAML files.

https://bitbucket.org/galaxy/galaxy-central/commits/5fac4d4b7d7d6b056056bf2a6094c7777dc28a71.