Configured 'default_basemap_simple' layer group to be the same as what exists in geoserver.emii.org.au/tilecache.emii.org.au.
This is in preparation for migration said existing services from eRSA.
Added bathy base layer.
Revert unecessary changes.
Merge pull request #2 from aodn/default_basemap_simple

Configured 'default_basemap_simple' layer group to be the same as what e...