Thompson theme: implement facet block view

Background

The Thompson HTML/CSS contains views which have not been implemented in the theme yet.

Requirements.

• Implement the "default" facet block view in block/facet
• Allow one facet item (per facet) at a time (no multiselect)
• Use "All" when nothing has been selected
• Ignore the date range facet, this currently cannot be inplemented in Integrated by default
• Add the number of items: (45) (might not be available with the "All" option)

Test scenarios

• Place a facet block, using the "default" view
• Does the facet work?
• Test with multiple facets
• Click all items in different order