Fixed basic Survey access check.
Also enabled this check for all relevant Views. However ProjectSurveys and subclasses still need an additional check. A stub for this has been added to the access module.
"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)