[bp/multiple] User conditions and age validation

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49604 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/12.x 49596 to 49604

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@49605 b456876b-0849-0410-b77d-98878d47e9d5