Dijit: Remove duplicate module summaries (which occurred both at the module level and also in the object returned from the module).
Dijit: Remove duplicate module summaries (which occurred both at the module level and also in the object returned from the module).

Also removed big doc-comment code blocks from focus.js and popup.js that were no longer needed.

Problem files:
  - Viewport.js, dojo/_base.js - Adding a summary here masks the documentation of the returned values.   But I did it anyway.

Refs #13101 !strict.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@28904 560b804f-0ae3-0310-86f3-f6aa0a117693

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