Allow properties to be added to categories
There should be an option to add properties to categories, as well as the ability to add categories.
As an example, I currently need to be able to add some properties as "Commercial", and some as "Residential". I'm sure there would be many other uses for this feature as well!
Also, once properties are added to a category, the URL for the property should become http://my.site.com/real_estate/commercial/property-name/ (assuming http://my.site.com/real_estate/ is the default root for the plugin!).
This would also then allow for sub menu items to be added specifying only commercial / residential properties, as well as the main option on the menu linking to the "root" of the plugin, e.g. showing all properties in the system.