only _blank links while downloading. fixed safari link after download

frontend/src/utils.js

@@ -79,41 +79,10 @@ function gcmCompliant() {
   }
 }
 
-function findMetric(href) {
-  switch (href) {
-    case 'https://www.mozilla.org/':
-      return 'mozilla';
-    case 'https://www.mozilla.org/about/legal':
-      return 'legal';
-    case 'https://testpilot.firefox.com/about':
-      return 'about';
-    case 'https://testpilot.firefox.com/privacy':
-      return 'privacy';
-    case 'https://testpilot.firefox.com/terms':
-      return 'terms';
-    case 'https://www.mozilla.org/privacy/websites/#cookies':
-      return 'cookies';
-    case 'https://github.com/mozilla/send':
-      return 'github';
-    case 'https://twitter.com/FxTestPilot':
-      return 'twitter';
-    case 'https://www.mozilla.org/firefox/new/?scene=2':
-      return 'download-firefox';
-    default:
-      return 'other';
-  }
-}
-
 function isFile(id) {
   return /^[0-9a-fA-F]{10}$/.test(id);
 }
 
-function sendEvent() {
-  return window.analytics.sendEvent
-    .apply(window.analytics, arguments)
-    .catch(() => 0);
-}
-
 function copyToClipboard(str) {
   const aux = document.createElement('input');
   aux.setAttribute('value', str);
@@ -143,8 +112,6 @@ module.exports = {
   hexToArray,
   notify,
   gcmCompliant,
-  findMetric,
   isFile,
-  sendEvent,
   ONE_DAY_IN_MS
 };