reimplemented l10n using dynamic import() (#1012)

this should greatly reduce the complexity of the l10n code
and build pipeline and eliminate the most common error
seen in sentry logs (no translate function)

test/integration/pages/desktop/download_page.js

@@ -14,6 +14,7 @@ class DownloadPage extends Page {
    * @throws ElementNotFound
    */
   waitForPageToLoad() {
+    super.waitForPageToLoad();
     browser.waitForExist(this.downloadButton);
     return this;
   }

test/integration/pages/desktop/home_page.js

@@ -12,6 +12,7 @@ class HomePage extends Page {
   }
 
   waitForPageToLoad() {
+    super.waitForPageToLoad();
     browser.waitForExist(this.uploadInput);
     this.showUploadInput();
     return this;

test/integration/pages/desktop/page.js

@@ -1,4 +1,4 @@
-/* global browser */
+/* global browser window */
 class Page {
   constructor(path) {
     this.path = path;
@@ -15,6 +15,12 @@ class Page {
    * @throws ElementNotFound
    */
   waitForPageToLoad() {
+    browser.waitUntil(function() {
+      return browser.execute(function() {
+        return typeof window.appState !== 'undefined';
+      });
+    }, 3000);
+    browser.pause(100);
     return this;
   }
 }