Make checkAgreesToSiteToS() the default access check for many other checks.
Replace checkIsUser() with the more-strict checkAgreesToSiteToS(). Also, add
missing args and kwargs parameters to checkAgreesToSiteToS() that were missed
in the merge right before commit.
Patch by: Todd Larsen
Review by: to-be-reviewed
Benjamin Niemann <pink at odahoda dot de>: Main developer of Python target.
Clinton Roy <clinton.roy at gmail dot com>: AST templates and runtime.