Created attachment 1137340 [details]
Not able to remove ostree content from CV via webUI

Description of problem:
I was trying to remove an ostree repo that was added to selected content-view from webUI. 

Version-Release number of selected component (if applicable):
Sat 6.2 snap4

How reproducible:
always

Steps to Reproduce:
1. create/sync a ostree repo 
2. create a CV and add os tree content
3. now remove the ostree content from CV

Actual results:
web UI throws notification 'Content-view updated' but it doesn't remove the ostree from selected CV

Expected results:
As soon as user remove the ostree content listed under 'List/Remove' tab , it should go to 'Add' tab. 

In any case user should be able to remove ostree content from CV via webUI

Additional info:
No error in logs:

2016-03-17 06:28:59 [app] [I] Started PUT "/katello/api/v2/content_views/3?organization_id=1" for 10.65.193.200 at 2016-03-17 06:28:59 -0400
2016-03-17 06:28:59 [app] [I] Processing by Katello::Api::V2::ContentViewsController#update as JSON
2016-03-17 06:28:59 [app] [I]   Parameters: {"content_host_count"=>0, "composite"=>false, "repository_ids"=>nil, "component_ids"=>nil, "default"=>false, "next_version"=>1, "id"=>"3", "name"=>"cv_ostree", "label"=>"cv_ostree", "description"=>nil, "organization"=>{"name"=>"Default Organization", "label"=>"Default_Organization", "id"=>1}, "created_at"=>"2016-03-17 15:44:09 +0530", "updated_at"=>"2016-03-17 15:44:09 +0530", "environments"=>nil, "repositories"=>[{"id"=>18, "name"=>"Red Hat Enterprise Linux Atomic Host Trees", "label"=>"Red_Hat_Enterprise_Linux_Atomic_Host_Trees", "content_type"=>"ostree"}], "puppet_modules"=>[{"id"=>1, "name"=>"motd", "author"=>"jeffmccune", "uuid"=>nil, "created_at"=>"2016-03-17 15:45:00 +0530", "updated_at"=>"2016-03-17 15:45:00 +0530"}], "versions"=>nil, "components"=>nil, "activation_keys"=>nil, "last_published"=>nil, "permissions"=>{"view_content_views"=>true, "edit_content_views"=>true, "destroy_content_views"=>true, "publish_content_views"=>true, "promote_or_remove_content_views"=>true}, "organization_id"=>"1", "api_version"=>"v2", "content_view"=>{"id"=>"3", "name"=>"cv_ostree", "label"=>"cv_ostree", "description"=>nil, "default"=>false, "created_at"=>"2016-03-17 15:44:09 +0530", "updated_at"=>"2016-03-17 15:44:09 +0530", "composite"=>false, "next_version"=>1, "repository_ids"=>nil, "component_ids"=>nil}}
2016-03-17 06:28:59 [app] [I]   Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.0.0.7/app/views/katello/api/v2/common/update.json.rabl within katello/api/v2/layouts/resource (14.8ms)
2016-03-17 06:28:59 [app] [I] Completed 200 OK in 279ms (Views: 13.3ms | ActiveRecord: 53.3ms)