This enables the sidebar app to function with only
jQLite, rather than the full jQuery library.

The main differences are:

 - jqLite's find() method only supports tag names.
   Element.querySelector() can be used instead
 - jqLite-wrapped input elements do not have a focus()
   method. Just call focus() on the input instead
 - The DOM focus() and select() methods are not fluent
   like their jQuery counterparts