Added logistics, small fixes and cleanup

logistic-network-stats.lua

@@ -0,0 +1,18 @@
+function GetAllLogisticGrids()
+    local resultParts = {}
+    resultParts[#resultParts+1] = "---logistic-grids---\n"
+    for _,surface in pairs(game.surfaces) do
+        local grids = game.forces["player"].logistic_networks[surface.name]
+        for _,grid in pairs(grids) do
+            resultParts[#resultParts+1] = ("%s:%d:%d:%d:%d:%d:%d"):format(
+                surface.name,
+                grid.network_id,
+                grid.all_construction_robots,
+                grid.all_logistic_robots,
+                grid.available_construction_robots,
+                grid.available_logistic_robots,
+                grid.robot_limit)
+        end
+    end
+    return table.concat(resultParts, "\n")
+end