Type filter shows classes not assigned to classgroups

[brianjlowe]

Describe the bug
The Type search filter in 1.15 shows all types instead of only the types assigned to classgroups (and thus displayed on the index page) as in earlier versions. This means that the user is confronted with meaningless filter values like "Continuant," "Independent Continuant," and "Information Content Entity".

To Reproduce
Add a person and search for it. Click the Type filter. Observe meaningless ontology class names as in screenshot below.

Expected behavior
Include only the types that are in classgroups. This would be consistent with earlier versions and the index page.

Screenshots