pass URL as first arg to ajax
pass URL as first arg to ajax

Jupyter's utils.ajax doesn't accept jquery.ajax's single-arg signature.

Anaconda-Platform/nb_anacondacloud,Anaconda-Server/nb_anacondacloud,Anaconda-Platform/nb_anacondacloud,Anaconda-Server/nb_anacondacloud,Anaconda-Server/nb_anacondacloud