integrate ecoinformatics login with the CIlogon identity mapping flow so that a user is directed through the process with no manual navigation needed (at least in the url bar). https://redmine.dataone.org/issues/1480
ajax-ify the call to perform identity mapping (including errors)
look up CN url for portal servlet instead of hardcoding it.
include CILogon link and more explanation about what is going on with the mapping.
correctly check that user is logged into metacat before proceeding
draft of legacy-to-d1 account mapping interface