Update bergamot translator to v0.4.1 (#111)

* Tested latest bergamot artifacts

* Removed "once-release" from package.json file

* Updated engine registry for testing

* constructTranslationService is not an async function

 - Removed "await" keyword at the callsite

* Imported latest changes from translator into translation worker

 - Imported all api changes pertaining to bergamot translator engine

* Updated the comment for constructing ResponseOptions

* Using v0.4.1 artifacts for the engine

* Upated bergamot-translator-worker.js file with latest artifacts

* Fixed linting errors

* Fixed end-to-end test failures

 - Changed input Spanish sentence and modified the expected result
   as well

extension/controller/translation/Translation.js

@@ -83,7 +83,11 @@ class Translation {
     translate(translationMessage) {
 
         if (translationMessage.type === "outbound") {
-            // if the message is from outbound translations, we skip the line.
+
+            /*
+             * if the message is from outbound translations, we skip queuing it and
+             * send for translation immediately
+             */
             if (this.translationWorker) {
                 this.translationWorker.postMessage([
                     "translate",