Edited Issue: application/json should return json verbose when MaxDataServiceVersion is 2.0 [830]

We should return json verbose payload when old client requests for json. This is the same behavior as WCF DS.

Currently, we always returns json light payload and fails when MaxODataServiceVersion is lower than 3.0.

The fix is to make CanWriteType smarter about DataServiceVersion, or won't fix it as we are only V3.0 service.