Add test/doh with module.js + runTests, plus create/destroy tests
Remove test pages now covered by doh tests in 0244144
Update index.json after initial doh test work
create-destroy doh test tweaks

* add group name to register call
* reverse assertion args, doh treats 1st as expected, 2nd as actual
Add util/misc.addCssRule-related doh tests
Remove manual addCssRule test page covered now by doh tests in 2d333d1
Remove unused dependency from addCssRule DOH test page
Add DOH test page for store-backed grids (OnDemandGrid, Pagination)