Add missing ids in relation tables

Relation tables having its models has to have primary key `id`.
Without it ActiveRecord is not functioning properly. It was causing
nasty errors with malformed SQL statements e.g.
`"content_view_version_environments".""`.

There were two models without ids: RolesUser,
ContentViewVersionEnvironment.

Org and environment deletion were not working. Missing ids were breaking
deletion of relations to these models.

This was probably causing more problems than the two mentioned.
(cherry picked from commit 8a1d93d28535692d37a21064abb32f6b6962ef05)