use endpoint that does not have XSRF protection to determine when the server is ready since we do not have the token yet.  fix issue #3637
use endpoint that does not have XSRF protection to determine when the server is ready since we do not have the token yet.  fix issue #3637

ScottPJones/beaker-notebook,ScottPJones/beaker-notebook,ScottPJones/beaker-notebook,ScottPJones/beaker-notebook,ScottPJones/beaker-notebook