When link filtering is activated using result set, the filter summary on breadcrumb shows how the items were selected.
Adding tooltip for interval facet bin hover and improving other tooltips.
* Result Preview shows correct "result" distribution when NOT is selected.
* When browsing linked data, related item count is shown
* Various Layout / CSS improvements
Improvements to checkboxes per item (for linked browsing)
Categorical Facet:
 - Culling out-of-scroll area facet values to improve rendering and interaction speeds.
Improved Titanic Demo