Always show one decimal place in dashboard progress percentage.
Always show one decimal place in dashboard progress percentage.

Connects to #1781

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