Slashes in a route param either causes Apache to return a 404 or Rails to 406, so I chose to encode '/' to '_slash_' before hitting the API endpoint and then decoding '_slash_' to '/' with Ruby. Hopefully we won't have to do this when Apache gets updated, allowing us to use 'AllowEncodedSlashes NoDecode' (see: https://jira.ets.berkeley.edu/jira/browse/CLC-3213)

The slash replacement itself is part of this pull's JIRA: https://jira.media.berkeley.edu/jira/browse/CLC-3184