Added User welcome message.
Added templates/soc/mail/welcome.html as a template for the message.
Also fixed a cyclic import that was about to happen in notifications.py.
"Decorator for views that gzips pages if the client supports it."
from django.utils.decorators import decorator_from_middleware
from django.middleware.gzip import GZipMiddleware
gzip_page = decorator_from_middleware(GZipMiddleware)