Clean up JqJsCmds to use fixHtmlCmdFunc to correctly install eventhandles after DOM is updated

[andreak]

As it is, usage of fixHtmlFunc often results in lift.onEvent() installing eventhandlers on elements which has not yet been inserted into the DOM, resulting in on*-events in AJAX-response not working when using AppendHtml and similar.

[Shadowfiend]

As a first step, we're going to try to disable event extraction in fixHtmlFunc for now, targeted for 3.1.

Then we can look at a better solution.

[Shadowfiend]

Kicked the bigger implementation to 3.2.