Increase maximum number of reservations from 12 to 50
Increase maximum number of reservations from 12 to 50

Connects to #1822

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