Fix sorting in tree shapefile query
Fix sorting in tree shapefile query

Sorting each aggregate by the tree id ensures all the arrays are in the
same order, the order in which the trees were entered.

kdeloach/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,azavea/nyc-trees,azavea/nyc-trees,azavea/nyc-trees,maurizi/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,kdeloach/nyc-trees,azavea/nyc-trees,kdeloach/nyc-trees,maurizi/nyc-trees,azavea/nyc-trees