Currently the XSLs in "Administration" -> "Configuration files" -> "XSL Transforms" -> "Publishing" require hardcoded hostnames and ports (because hostnames and ports are required by links going out by OAI-PMH). This requirement means that we can't use the same XSL on both the STAGING and PROD but need to make changes between the two.

Hostname and port should be passed in as parameters to the XSL, so that these don't need to be changed.