AVATAR_DEFAULT_URL can start with http:// if for some reason it's hosted on another domain
AVATAR_DEFAULT_URL can start with http:// if for some reason it's hosted on another domain

Signed-off-by: Jannis Leidel <9b7c7d158dc2d8ee5ad777a516c517e4cfb54547@leidel.info>

wyleung/django-avatar