2.3: Full Stac Exploration

Explorer 2.3 enables full Stac Item information by default on searches, thanks to some performance improvements.

Deployments should run cubedash-gen -v --init again to update their indexes.

It can be run at any time (before or after upgrading the deployment) and is not mandatory, but is strongly recommended for faster API usage.

(it took about 30 seconds to run on our existing 100GB Open Data Cube index.)