- Rewrote Javascript to make better use of server-side logic
- Eliminated many server-side special cases specific to lightbox handling
- Adjusted test suite to accommodate improvements

- Replace getters with public properties for simplicity/perforamnce.

- This didn't work correctly due to the way $.fn.autocomplete.ajax delays before kicking off XHR; it was not possible to return the XHR object directly for chaining .done() on the end.

- Adds hidden filter support to Primo backend
- Moves hidden filter functionality from Search Options classes to Search Params classes

Some uses mentioned that they want to navigate in the input using the arrow keys. This is possible now.

One can navigate using the left and right arrow keys. Press ctrl + arrow up to get back to result list.