Copy the wrapped settings object when creating UserSettingsHolder
Copy the wrapped settings object when creating UserSettingsHolder

This is needed otherwise deleted settings don't get added back for
later tests

pjdelport/django-analytical,bittner/django-analytical,apocquet/django-analytical,ChristosChristofidis/django-analytical,jcassee/django-analytical,ericdwang/django-analytical,machtfit/django-analytical