Added check in user serialzier to ensure that firebase token is only added to JSON when it's defined
Added check in user serialzier to ensure that firebase token is only added to JSON when it's defined

theonion/django-bulbs,theonion/django-bulbs,pombredanne/django-bulbs,theonion/django-bulbs,theonion/django-bulbs,theonion/django-bulbs,pombredanne/django-bulbs