Django admin: Remove "draft domains" & "websites" sections from the navigation for analysts

[vickyszuchin]

Issue description

Remove "Draft domains" section from the navigation for analysts.

This section displays the domain names that appear in a domain request. Cameron noted this section of the admin does not need to be exposed to analysts anymore.

Acceptance criteria

• "Draft domains" is removed from the navigation for users with "analyst" permission
• Analyst is still able to edit the "requested domain" via the domain-request page.
• "Websites" is removed from the navigation for users with "analyst" permission
• Analyst is still able to edit "alternative domains" via the domain-request page. (Note: "current websites" are no longer editable via the domain-request page for analysts; that should remain as is)

Additional context

This is an update that came out of the recent audit of Django field labels. And from user feedback gathered during the Diary Study.

Links to other issues

Related to: #1924

[vickyszuchin]

This ticket is accepted to the backlog because it was split from a current backlog ticket.

[Katherine-Osos]

Added "refinement" label. Need to determine how the field can still be edited within a request ... after the section is removed from navigation. Also determine whether the "websites" section should be removed from navigation, as well.