Email/Query sort by hasKeyword

[remk]

WHY

With the new specifications as an user i want to be able to sort the emails by the presence of a given keyword

hasKeyword - This value MUST be considered true if the Email has the keyword given as an additional keyword property on the Comparator object, or false otherwise.

Here is the query to display first the emails containing the 'james' keyword.

[[ "Email/query",{
  "accountId": "ue150411c",
  "sort" : {
      "property": "hasKeyword",
      "keyword": "james",
      "isAscending": true
}
}, "0" ]]

HOW

• accept the 'hasKeyword' value in the 'property' field of the sort field of the request.

DOD

• write an integration test demonstrating the sorting of the result by 'hasKeyword' in both ascending and descending order