Make Query.Property parameterised with <BT> "Base Type" as Number, String, Temporal, Boolean or Object

These types then determine which functions are valid for the types. So:
- Number functions
- String/varchar functions
- Temporal Date, DateTime, Time functions
- Boolean functions
- Object being everything else

ebean-querybean/src/test/java/org/querytest/QOrderTest.java

@@ -261,7 +261,7 @@ public class QOrderTest {
         .add(gt(coalesce(o.customer.version, 0), 42))
         .id.lt(12)
       .endOr()
-      .query();
+     .query();
 
     query.findList();