remove references to/use of dojox/mobile/app
Steps for getting the tests working again in the current dui packaging. As for the changes in themes/common/dijit: short-term fix
Add packages directive to data-dojo-config to adapt to the current packaging
Removal of mobile.js and cleanup of tests that used to require dojox/mobile
merge #2. remove references to/use of dojox/mobile/app
treat accessKey as a keyboard event not as a mouse click, fixes #17254
add aria-labelledby to menus spawned by PopupMenu[Bar]Item, fixes #17255
_WidgetsInTemplateMixin: fix conversion error from when deprecated code was removed
various test updates for _WidgetsInTemplateMixin

In particular, use direct test for when startup() gets called, rather than observing
TabContainer behavior.   Refs #9348.

Also don't depend on the click handling being internally implemented as an onClick()
method.
fix Destroyable test to not use dojo.js