Added ability to show decimals for numeric attributes

Topics:

https://usabilitydynamics.com/products/wp-property/forum/topic/bathrooms-numbers-rounding-up/

https://usabilitydynamics.com/products/wp-property/forum/topic/is-there-a-way-to-put-in-1-5-baths-how-do-you-stop-the-rounding/

https://usabilitydynamics.com/products/wp-property/forum/topic/automatically-rounding-result-when-aggregating-child-value-to-parent/?_wpnonce=c54e36467d#post-20194