fix(docs): only check for SEVERE logs in tests

Author: tbosch

docs/app/e2e/docsAppE2E.js

@@ -1,5 +1,7 @@
 'use strict';
 
+var webdriver = require('protractor/node_modules/selenium-webdriver');
+
 describe('docs.angularjs.org', function () {
 
   beforeEach(function() {
@@ -11,9 +13,12 @@ describe('docs.angularjs.org', function () {
   afterEach(function() {
     // verify that there were no console errors in the browser
     browser.manage().logs().get('browser').then(function(browserLog) {
-      expect(browserLog.length).toEqual(0);
-      if (browserLog.length) {
-        console.log('browser console errors: ' + require('util').inspect(browserLog));
+      var filteredLog = browserLog.filter(function(logEntry) {
+        return logEntry.level.value > webdriver.logging.Level.WARNING.value;
+      });
+      expect(filteredLog.length).toEqual(0);
+      if (filteredLog.length) {
+        console.log('browser console errors: ' + require('util').inspect(filteredLog));
       }
     });
   });