Description of problem:
navigating to
https://<satellite_server>/content_views/<id of non existing CV>

only shows a popup with 404, but allows user to load the page with no details. when user navigates to the <versions> tab, he can see all versions of all content views (even belonging to other orgs).

Version-Release number of selected component (if applicable):
6.5.0-8

How reproducible:
always

Steps to Reproduce:
1. create multiple orgs and create+publish a content view in each of them
2. navigate to one of them and remove it (you get to remove the published versions first)
[3.a] the page shows a popup of CV being deleted, however it does not refresh the page, so you can still see the CV record in the table
[3.b] click it
[4] or simply navigate to /content_views/<nonexisting id>/
5. 404 pops up, but you still get to the CV details page
6. navigate to <versions> tab and explore all the versions of all the CVs created in different orgs

Actual results:


Expected results:


Additional info: