Moved config.ftl up a level, so that it is available for both imos *and* aodn namespaces.

There are many aodn layers which reference this config, but it was missing (probably since a few migrations here and there).  The effect was the any `GetFeatureInfo` requests would return an 500 Internal Server Error - which is in turn showing up as "no features at location" on the portal.
Merge pull request #187 from aodn/fix_config_import

Moved config.ftl up a level, so that it is available for both imos *and*...