Parse all mapping registries as a preprocessing step

[matentzn]

Instead of loading the mappings registries client side from the network, lets

1. Create a Makefile with a makegoal

mappings.yml: mapping-server.yml
      python scripts/read_mapping_registry_metadata.py --registry $< --metadata $@

This goal should read the mapping-server.yml, load all the mapping sets and create one big yaml file with mapping set metadata.
2. Use mappings.yml for the VUE component to render.

[matentzn]

I added two more registries:

2239107