Provides edit-in-place functionality.
Marks element as QuickEdit, i.e. when user clicks it, it transforms into input. Input type is specified via second argument (QuickEdit.STRING => input, QuickEdit.SELECT => select). If QuickEdit.SELECT type is chosen, it's options are specified in options. Example:
var text = Dom.create("span");
text.innerHTML = "hello";
QuickEdit.assign(text, QuickEdit.SELECT, ["hello","hi","goodbye"]);