Operations and Management for Contacts.

2019-02-08

• Possibility to update and create a Contact with the same call. Also, added a 204 status code.

• For get contacts from list: No update in swagger schema but response modified to return:

{
	contacts: [], 
	count: 0
}

instead of

{}

• This last change is also applied to the get Contacts operation.

• When removing contacts from list: Success property is no longer required as input field.

• Response code modified from 200 to 201 when opting for all options in the call.