The course import now makes use of the backup and restore processed and the backup UI to allow the user to import one course into another.
The new UI is much the same as the backup ui except preceeded by a course selector to choose the course to import from.
Grrr! just spent ages debugging a really subtle bugs because moodle_urls can
change, and override_active_url was keeping a reference to the caller's URL
rathern than taking a private copy.