Adding the metadata to the builder and mutator interfaces.
Adding the translations parser.
Fixing bugs.
Moar bug fixing.
Adding a BodyParserInterface.
Bug fix.
Separating the RelateBodyParser in a LinkBodyParser and an UnlinkBodyParser.
Extracting the metadata from the request body.
Adding a locale parser.
Adding a default locale negotiator.
Bug fix.
Setting the translatable locale for all magic actions.
Merge remote-tracking branch 'origin/master' into feature/api-65-i18n
Oops. Correcting the services conf.
Merge remote-tracking branch 'origin/develop' into feature/api-65-i18n
Merge pull request #48 from GoIntegro/feature/api-65-i18n

[API-65] Handle translatable content