[#33] & [#34] : JSON serialization configuration. Pretty printing only in test/dev environment.
[#33] & [#34] : Removed unnecessary @Bean annotation
[#33] [#34] Marcin Grzejszczak's suggestions
Merge pull request #35 from 4finance/json_serialization_improvements

[#33] & [#34] : JSON serialization configuration. Pretty printing only in test/dev environment. All objects, not only exceptions.