* Adding default values to skip and take to align with the rest of the controllers
* Changing skip and take type from long to int to align with the rest
* Fixing wrong response type
* Remove double skip and take
* Update json file
* Updated API version package and moved attribute to each controller as it cannot be inherited.
* Ignore "$type" on types implementing interfaces in the delivery api
* Created a common library for the APIs and moved stuff that is required for the new content API. Also moved the versioned backoffice API route handling to the management API where it belongs.
* Remove test auth attribute from Media
