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
Add checkAgreesToSiteToS() (partially implemented until circular import fixed).
Need to fix a circular import problem before the alternate message will
include a link to the site-wide ToS Document.
Also, fixed the descriptions in the first few check...() functions.
Patch by: Todd Larsen
Review by: to-be-reviewed