Fix some dumb bugs in the bulk_import_hulu rake task
Switch to Enumerators with Hooloo 3.x, fix variable shadowing
Remove broken unique constraint on videos, fix Video#create_or_update_from_hash

Also improvements to Video#create_or_update_from_hash and
Episode#create_or_update_from_hash, switching them from first_or_create
to first_or_initialize (since we save on our own afterwards)