Make actionbar invisible when empty
Make actionbar invisible when empty

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