Add a jQuery triggers to the widget save action

[digitalnature]

Line 241 (widgets.dev.js):

$(document).trigger('saved_widget);

or something...

This way we could nicely hook our own js on that "saved_widget" event, instead of stuffing our js inside the widget form function.

This is relevant for all events created by WordPress in the administration area, not just widget-save.

Think of it like "add_action" for javascript...