Added support for ignoring HTTP errors directly from the Angular $http options

src/Umbraco.Web.UI.Client/src/common/security/securityinterceptor.js

@@ -22,7 +22,7 @@ angular.module('umbraco.security.interceptor')
 
                     //Here we'll check if we should ignore the error, this will be based on an original header set
                     var headers = originalResponse.config ? originalResponse.config.headers : {};
-                    if (headers["x-umb-ignore-error"] === "ignore") {
+                    if (headers["x-umb-ignore-error"] === "ignore" || originalResponse.config.umbIgnoreErrors === true) {
                         //exit/ignore
                         return promise;
                     }
@@ -99,4 +99,4 @@ angular.module('umbraco.security.interceptor')
     // We have to add the interceptor to the queue as a string because the interceptor depends upon service instances that are not available in the config block.
     .config(['$httpProvider', function ($httpProvider) {
         $httpProvider.responseInterceptors.push('securityInterceptor');
-    }]);
+    }]);