Revert "Remove the Compara orthologs from the load"

This reverts commit 5222660488480ec109d9a50c2be0d1f1b4e95991.

See: https://www.ebi.ac.uk/panda/jira/browse/PB-1701?focusedCommentId=84941&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-84941