Populate geocontext service registry regulary

[NyakudyaA]

Problem

Whilst solving some urgent issues on healthy rivers we are defining groups, registry layer directly using the admin interface.

We need to keep track of what has been added to the admin site so that we can add it in the json file so that the two do not diverge.

@dimasciput please point me to any new layers you have defined in the admin page as well as group definitions so that I can populate the json regularly.