For a given organization, restrict the filters to those values that apply to the given organization (DDS-438)

Facet choices on right should be restricted to the ones that pertain to the datasets in the organization. And numbers should appear next to the org labels and the facet labels.

No file or test is named; start by locating the organization dataset page and its facet/filter components. Confirm the current dataset scope, then verify that only applicable facet values remain and that counts appear beside organization and facet labels.

Written by the indexing model from the issue text.