autoSuggest.setGenerateEntriesCallback(cbFunc) which allows a custom
client side function to provide the listet suggestions instead of a
server side response retrieved with an XHR; the custom function has to
return an object with an "entries" property which contains an array with
the suggestions; this object will then be added to an automatically
generated "response" object.

Change-Id: Ib849f41aee52c30ef02c01b9186715ef00c29bb0