Item12717: docu fixes



git-svn-id: http://svn.foswiki.org/trunk/MailerContrib@17234 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Item12717: expand %WEB% everywhere, deprecate %TOPICNAME% everywhere



git-svn-id: http://svn.foswiki.org/trunk/MailerContrib@17235 0b4bb1d4-4e5a-0410-9cc4-b2b747904278