Fix config inconsistency (#609)

* Plural/singular confusion in config key

* Flow class vs flow blueprint nomenclature change

* Update docs & CLI to reflect the above

trustgraph-cli/trustgraph/cli/delete_flow_blueprint.py

@@ -0,0 +1,51 @@
+"""
+Deletes a flow blueprint
+"""
+
+import argparse
+import os
+import tabulate
+from trustgraph.api import Api
+import json
+
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
+
+def delete_flow_blueprint(url, blueprint_name):
+
+    api = Api(url).flow()
+
+    blueprint_names = api.delete_blueprint(blueprint_name)
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='tg-delete-flow-blueprint',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-u', '--api-url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
+    )
+
+    parser.add_argument(
+        '-n', '--blueprint-name',
+        help=f'Flow blueprint name',
+    )
+
+    args = parser.parse_args()
+
+    try:
+
+        delete_flow_blueprint(
+            url=args.api_url,
+            blueprint_name=args.blueprint_name,
+        )
+
+    except Exception as e:
+
+        print("Exception:", e, flush=True)
+
+if __name__ == "__main__":
+    main()