reduce number of nodes to load per bach

500 appears to be too large and can result in HTTP/414 "Request-URI Too Long" errors

Author: tyrasd

scripts/regional-diff.py

@@ -263,7 +263,7 @@ def __osmosis(self):
         diff_for_boundary_cut = filtered_diff
         if len(nodes_to_download) > 0:
             # download list nodes_to_download via overpass, in batches of $node_batches (e.g.12K nodes are rejected by server):
-            node_batches = 500
+            node_batches = 300
             node_batch_counter = 0
             overpass_output_array = []
             while node_batch_counter < len(nodes_to_download):