Pixiportal

As an administrator, I want to manage sites or agencies, so that company locations are managed centrally.

- Acceptance Criteria:
Creation:
The administrator can create a site with a name and location.

Modification:
The administrator can update an existing site's information.

Deactivation:
The administrator can deactivate a site no longer in use; already-linked users retain the historical information. Sites are deactivated, never deleted.

Consultation:
The administrator can view the list of active and inactive sites.