Added "stepsPreview" to mocking server JSON in support of Manage Flow UI
Added "stepsPreview" to mocking server JSON in support of Manage Flow UI

 - Allows us to render step types under Flow name (colored bars)

marklogic/data-hub-in-a-box,marklogic/data-hub-in-a-box,marklogic/data-hub-in-a-box,marklogic/data-hub-in-a-box