Added filters to markup with placeholder accessibility filters
Updated facetting to work with checkboxes and preserve parent facets

This way a new search result doesn't remove the old facets (which still
apply). Allowing users to toggle / switch on more facets.
Style for filtering
Move from UL / LI's to DIV with SPANS
Set something-highlighted so we can remove the border

looks ugly with the border.

Also only include facet markup if we have facets (then accessibility
will be on the left)
Comment what happens when the filters button is selected
Styling to highlight the filters button / small fixes
Fix bug where default category wasn't set for viewing a POI
Merge pull request #16 from ox-it/filtering-results

Filtering results