LP1615805 No inputs after submit in patron search (AngularJS)

LP1615805 No inputs after submit in patron search (AngularJS)

Updates the source order of the AngularJS patron search form's reset and
submit buttons to the end so that no input fields appear after the
submit button, as required for accessibility. This results in an awkward
tabbing order for sighted users, but is intended as an interim step
toward better accessibility while we rethink the overall design of the
form.

The visual layout of the form has not changed at desktop sizes, but
there are now phone and tablet layouts as well.

The Reset button now uses the .btn-destroy style.

Release-note: Moves submit button to end of AngularJS patron search form

Signed-off-by: Stephanie Leary <stephanie.leary@equinoxoli.org>