update make sync_refs to new graph_reference/ structure

Author: etpinard

makefile

@@ -43,12 +43,12 @@ sync_chunked : submodules/chunked_requests
 sync_refs : submodules/graph_reference
 	@echo ""
 	@echo "Syncing graph_reference directories"
-	rm -r plotly/graph_reference
+	rm -rf plotly/graph_reference
 	mkdir plotly/graph_reference
-	cp submodules/graph_reference/graph_objs_meta.json plotly/graph_reference
-	cp submodules/graph_reference/KEY_TO_NAME.json plotly/graph_reference
-	cp submodules/graph_reference/NAME_TO_KEY.json plotly/graph_reference
-	cp submodules/graph_reference/OBJ_MAP.json plotly/graph_reference
+	cp submodules/graph_reference/graph_objs/python/graph_objs_meta.json plotly/graph_reference
+	cp submodules/graph_reference/graph_objs/python/KEY_TO_NAME.json plotly/graph_reference
+	cp submodules/graph_reference/graph_objs/python/NAME_TO_KEY.json plotly/graph_reference
+	cp submodules/graph_reference/graph_objs/python/OBJ_MAP.json plotly/graph_reference
 
 pull_refs : submodules/graph_reference
 	@echo ""