Bugfix on expanding last row of a grouped view

When you have a grouped view, and expanding the last one there are 2 problems:
1) The last row expander style is not changed
2) Expanding another row, will duplicate the last one
some assertions adjusted & a chunk of if(0)-ed future work ongoing.
- updated jquery-jsonp + added as submodule to help track it.

- render the examples index with a number for each: easier to reference them, even while the numbers change over time when you reshuffle/reorganize the examples.
unit tests reveal bug: fix: kill timer-delayed pending render actions, etc., which will otherwise crash or fail when the slickgrid instance has been destroyed before the timer fires.
- bugfix: fix crash in slickgrid

- unit tests: jquery.simulate.js was missing. fixed.
Merge remote-tracking branch 'remotes/pigiax/patch-1' into k0stya-rowspan