Create SearchView for Reference properties

[TW80000]

• Must provide a SearchView based on the types of the properties used to identify a unique instance of the Model that the Reference property is referencing.
  • For example: If there's a relationship between a User model and an Account model, and that relationship defines a property on the Account model named "owner", that owner property will be of type foam.core.Reference. It will have an "of" attribute that refers to the model it references, in this example, that model would be User. Then, the SearchView would need to determine the properties on User that are used to identify a unique instance of the User model. In this example, that would be the "id" property on User, of type Long. Therefore, the Reference SearchView would provide an appropriate search view for Longs. Note that models can have multiple identification properties, and they can be different types. That will be a much more complicated situation to handle.

@jlhughes Tagging you so you know this ticket exists.