Remove deprecated parameters from asyncTest

The optional numeric parameter to asynctest has been deprecated:
http://api.qunitjs.com/asyncTest/ replaced with explicity calls to
expect().
Allow data-subview on non-div elements

Change the search pattern from 'div[data-subview]'
to just '[data-subview]' so I can specify subviews
on non div elements.

Add test.

Make same change to -debug version.