Insert geometry column in front of other columns

The first geometry column is somewhat special, because the automatic
index and clustering will be done on that column. So it is important
that this column will end up as the first geometry column (in case there
are others later on).

Author: joto

lua/themepark.lua

@@ -351,7 +351,7 @@ function themepark:add_table(data)
             data.geom_column = data.geom.column
             data.geom = nil
         end
-        table.insert(data.columns, {
+        table.insert(data.columns, 1, {
             column = data.geom_column,
             type = data.geom_type,
             projection = self.options.srid,