SAK-21124 added the iframe.allowed.macros property

git-svn-id: https://source.sakaiproject.org/svn/config/trunk@118961 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-21124 add user_eid macro, it is also allowed

git-svn-id: https://source.sakaiproject.org/svn/config/trunk@118962 66ffb92e-73f9-0310-93c1-f5514f145a0a