Fixes #6097,bz1120427 - repository.feed -> repository.url

Migrating a repository data model attribute from feed to url. The word
feed applies to the feed url used by pulp, but in katello UI, CLI and
API we consistently use url for feed. To mitigate this confusion it was
deemed to rename feed to url.
Fixes #5858,bz 109961 - Updated cv published content count

After a content view is published, the package/errata counts of the
newly created content view version was not getting updated in the ui.
This commit aims to fix that by forcefully reloading that specific
version of the content view when the publish is completed.