Merge branch 'master' of github.com:swagger-api/swagger-ui

Author: fehguy

src/main/javascript/view/MainView.js

@@ -61,13 +61,7 @@ SwaggerUi.Views.MainView = Backbone.View.extend({
       // Localhost override
       this.model.validatorUrl = null;
     } else {
-      // Default validator
-      if(window.location.protocol === 'https:') {
-        this.model.validatorUrl = 'https://online.swagger.io/validator';
-      }
-      else {
-        this.model.validatorUrl = 'http://online.swagger.io/validator';
-      }
+      this.model.validatorUrl = '//online.swagger.io/validator';
     }
 
     // JSonEditor requires type='object' to be present on defined types, we add it if it's missing