fixed problem with deserialization of lists , when no serialization was made before
Merge branch 'master' of git://github.com/zeldigas/spring-data-simpledb into zeldigas-master

Conflicts:
	spring-data-simpledb-impl/src/main/java/org/springframework/data/simpledb/core/entity/json/JsonMarshaller.java
	spring-data-simpledb-impl/src/test/java/org/springframework/data/simpledb/core/entity/json/JsonMarshallerTest.java
Using new JsonMarshaller for specific test