This patch allows pgAdmin to list databases and schemas when connected to a Greenplum server.
The fix was largely allowing pgadmin to load templates that work with Greenplum. To achieve this, we used the versioned template loader in more places where "9.1_plus" was previously hardcoded.
We also created a set of "default" template directories so that Greenplum will load the templates that were tagged as 9.1 for now.