Merge pull request #928 from CartoDB/extract-cors-mw

Make cors middleware more generic and link it just to application level

lib/cartodb/controllers/template/admin.js

@@ -1,5 +1,4 @@
 const { templateName } = require('../../backends/template_maps');
-const cors = require('../../middleware/cors');
 const credentials = require('../../middleware/credentials');
 const rateLimit = require('../../middleware/rate-limit');
 const { RATE_LIMIT_ENDPOINTS_GROUPS } = rateLimit;
@@ -20,6 +19,8 @@ function AdminTemplateController(authApi, templateMaps, userLimitsApi) {
 module.exports = AdminTemplateController;
 
 AdminTemplateController.prototype.register = function (templateRouter) {
+    templateRouter.options(`/:template_id`);
+
     templateRouter.post(
         `/`,
         credentials(),
@@ -66,8 +67,6 @@ AdminTemplateController.prototype.register = function (templateRouter) {
         listTemplates({ templateMaps: this.templateMaps }),
         sendResponse()
     );
-
-    templateRouter.options(`/:template_id`, cors('Content-Type'));
 };
 
 function checkContentType ({ action, label }) {