XX-11228: Expose Phone Group via REST API
-api/phoneGroups GET to retrieve all phone groups POST to create a new one
-api/phoneGroups/{phoneGroupId} GET, DELETE, PUT for retrieving, deleting, modifying phoen group
-api/{groupId}/up PUT for move phone group up
-api/{groupId}/down PUT for move phone group down
-api/{groupId}/models GET for retrieve all phone models
-api/{groupId}/model/{modelName}/settings - GET specific settings for model
-api/{groupId}/model/{modelName}/settings/{path:.*} GET, PUT, DELETE - retrieves modifies, reverts to default a given setting