Remove hardcoded insecure websocket connection

[tool.poetry]

name = "nova-trame"

version = "0.17.0"

version = "0.17.1"

description = "A Python Package for injecting curated themes and custom components into Trame applications"

authors = ["Duggan, John <dugganjw@ornl.gov>"]

readme = "README.md"

            ready_%(port)d(

                function() {

                    var websocket_type = mpl.get_websocket_type();

                    var websocket = new websocket_type(`ws://${window.location.host}/mpl/%(port)d`);

                    var websocket = new websocket_type('mpl/%(port)d');

                    var fig = new mpl.figure(

                        // A unique numeric identifier for the figure