v2.0.0: claims model - signed MMUR2 votes in a truth DB, merged view in a rebuildable cache DB; POST /api/claims, claims and merge routes, unsigned writes answer 410

docker/entrypoint.sh

@@ -10,6 +10,7 @@ set -e
 # Create required directories
 mkdir -p /meta-core/locks
 mkdir -p /meta-core/db
+mkdir -p /meta-core/db-cache
 mkdir -p /meta-core/mounts/errors
 mkdir -p /files
 mkdir -p /var/log/supervisor