Change Calendar Deserializer to accepts json object format as:
{"time":1301886000000,"timezone":"America/Sao_Paulo"}

Add test to validate this format
Fix timezone area to same of Dog test because differs of travis build
Calendar instance
Fix weird indent and add a throw a conversion error if the object
doesn't have time and timezone properties and if these values are
invalid
Merge remote-tracking branch 'dipold/fixGson'

Conflicts:
	vraptor-core/src/test/java/br/com/caelum/vraptor/deserialization/gson/GsonDeserializerTest.java