This function returns TRUE if the user has the specified privilege to the specified group. The privilege is a one-character representation of the access level, as follows:
Takes two parameters:
The security group to be checked.
The access level to be checked.
Returns TRUE if the current user does have the specified access.
Returns FALSE if the user does not have the specified access.
Evaluates whether the user has the specified role:
<$userHasGroupPrivilege("Public", "R")$> <$userHasGroupPrivilege("Secure", "A")$>