fixes #4956 update progressbar template to give a unique id to the text node; Add ARIA described by property to provide the text node value to the screen reader.
fixes #4956 update progressbar template to give a unique id to the text node; Add ARIA described by property to provide the text node value to the screen reader.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@11453 560b804f-0ae3-0310-86f3-f6aa0a117693

kitsonk/deliteful,EAlexRojas/deliteful,tkrugg/deliteful,harbalk/deliteful,EAlexRojas/deliteful,brunano21/deliteful,cjolif/deliteful,cjolif/deliteful,kitsonk/deliteful,brunano21/deliteful,harbalk/deliteful,tkrugg/deliteful