[deployment] The seeded pages don't have an URL on the first deployment

[tudoramariei]

Describe the bug
When deploying a new instance, the pages generated at the beginning can't be accessed because they don't have a URL. This can be easily solved by saving the page, but it may not be so intuitive for people.

To Reproduce
Steps to reproduce the behavior:

1. On a fresh instance, go to pages in the admin menu
2. Click on the dropdown on the down arrow of a page item
3. Click on View/Vezi
4. This leads to a 404 page

Expected behavior
When clicking on View on a published page, it's expected to be able to view the page.