Refs #12863. Now that DTL supports async AMD, use async:true in AMD charting demo.
Refs #12863. Now that DTL supports async AMD, use async:true in AMD charting demo.

git-svn-id: ee6e786acc44c9cca5ee17c71a5576c45c210361@26538 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful