Loads up minimal information for the "Delete Account" page in the profile.

• Determines whether or not you're even allowed to delete this account
• Sets the page title and a couple of other context variables for the template
• Requires the "profile_remove_own" or "profile_remove_any" permission
• Accessed at ?action=profile;sa=deleteAccount or ?action=profile;u={user_id};sa=deleteAccount
• With the right settings, it's possible to make this the only section of the profile a user can access...