[ddbnext-53] set page label as text beside favicon
[ccbnext-53] change from xml.item.pageLabel to xml.pagelabel

  In the new API the node pagelabel is child of cortex item's view
  xml, *not* child of item node in cortex item's view.
Merge branch 'feature/ddbnext-53' into develop

Conflicts:
	grails-app/controllers/de/ddb/next/ItemController.groovy
	grails-app/services/de/ddb/next/ItemService.groovy