Create or adapt existing tests for insights mode.

Continues effort from AAH-1271,
tentative list of things to ensure are being tested:

Namespace create/edit/list/search/delete
Namespace group management
Collection list and search
Collection detail and documentation
Import records and logs, search
Approval dashboard

(note that some of these are only accessible via url, not from the menu in inishgts mode)

also https://issues.redhat.com/browse/AAH-2011