make a custom dijit that subclasses combobox and uses autosuggeststore

make a custom dijit that subclasses combobox and uses autosuggeststore

In theory you could now use markup based dojo declarations to turn a
given text input into an autosuggesting dijit.  But we need to be able
to turn autosuggest on/off by a switch, and how would we make dojo
markup-based declarations respond to conditionals?

Incidentally, this commit does also take care of populating the value of
the search box after issuing a search.

Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>