GEM Historical Earthquake Catalogue

To perform the test retrieve the ghec_data.csv from our private repository (you can also use development data but are less representative) and put into the private_data directory as usual.
After the installation you will found a new label: VIEW -> Basic Dataset -> Historical catalogue where you can navigate the GHEC.
As layer you can found a new  workspace "ghec_viewer", store "ghec_viewer", layer "ghec_viewer_measure".
You can use it into the Explore application to produce new maps.
Addresses: https://bugs.launchpad.net/oq-platform/+bug/1169876