Metacat

Current we use the StartTlsRequest to secure the connection between the Metacat and ldap server. The url for this connection is ldap://ldap.ecoinformatics.org:389/. Nick is thinking to close the port 389 and leave port 636 open, which is used for the ldaps protocol. So we may need to change the url to ldaps and some code as well. We also need to take a look at the ldapweb code as well.