Description of problem:

Looks like Dashboard, maybe some widget is keeping a reference to deleted organizations, so loading it raises the following error:

"Oops, we're sorry but something went wrong Katello::Resources::Candlepin::OwnerInfo: 404 Resource Not Found {"displayMessage":"Organization with id boZBEd could not be found.","requestUuid":"23042dae-9841-47b3-a6a8-bb5209fef8df"} (GET /candlepin/owners/boZBEd/info)"


Version-Release number of selected component (if applicable):

Sat 6.2 Snap 12

How reproducible:

Always when deleting orgs using API

Steps to Reproduce:
1. Create some new organizations and assign hosts to each one 
2. Login to satellite webUI and change context to "AnyOrganization"
3. Using API or nailgun delete the hosts, then delete one organization
4. try to refresh the browser in dashboard or try to login again (as dashboard is the home page)

Actual results:

Error mentioned above right after login or when refreshing the page at dashboard
(acessing other pages like /organizations works well)

Organization with id "deleted org id" could not be found

Expected results:

Dashboard get its organization references updated when some org is deleted

Additional info:

Tried acessing in another browser session and even in another machine, so looks like the reference to deleted org is stored somewhere server side at dashboard.