Add govuk_frontend_toolkit gem
Remove asset_path monkey patch -- fixed by including govuk_frontend_toolkit ~> 2.0.0
Preserve tab and sort state when clearing filters
"#spinner" display: none
Remove inline styles
Revert "Remove asset_path monkey patch -- fixed by including govuk_frontend_toolkit ~> 2.0.0"

This reverts commit a721f9f71a8585dd487faa6001f8d26ea1ad7dae.
Refactor partials and update styles and JS