Handle Advanced Sort

[OllegK]

Advanced Sort isn't taken into account, at least for the React demo. Siebel doesn't run anything on the presentation model for the applet being sorted for advanced sort, so this makes no trigger in change of state. In order to get it working with the React Demo (a modded version), I put a PR on the sort applet to trigger a change to a global flag to make React know the data changed.
So in BindEvents for the PR:
$(fullAppletId).find("[title='Sort Order:OK']").on("click", function(){
SiebReact.sorted = true;
});

In React component:
if(SiebReact && SiebReact.sorted){
SiebReact.sorted = false;
SiebReact.refreshList();
}

Our implementation relies heavily on advanced sort, since the users actually use that for sorting instead of clicking columns on Siebel.

Is it possible for Nexus to know the advanced sort has been triggered by a user and somehow trigger a callback since Siebel doesn't?