NXP-13616 Enhance blob URL to include full URL
NXP-13616 add DownloadServlet in webengine feature since its used in DocumentModel JSON marshalling
cosmit
NXP-13616 correct nxbigfile scheme generation, update other calls to JsonDocumentWriter
NXP-13616 Update Select2 to use new JSONDocumentWriter API
NXP-13616 If request is null then marshalled JSON won't contain blobs download URLs