maintain Tabs reference on window object for dashboard

Author: archmoj

devtools/test_dashboard/server.js

@@ -68,6 +68,8 @@ compiler.run(function(devtoolsErr, devtoolsStats) {
                 } else {
                     console.log('success:', config.output.path + '/' + config.output.filename);
 
+                    window.Tabs = window.Plotly;
+
                     if(firstBundle) {
                         // Create server
                         var server = http.createServer(ecstatic({