Remove napa

It caused errors while running npm commands
I found alternatives to those two packages
which were used with napa

assets/js/src/newsletter_editor/components/save.js

@@ -7,7 +7,7 @@ define([
     'backbone.marionette',
     'jquery',
     'blob',
-    'filesaver',
+    'file-saver',
     'html2canvas'
   ], function(
     App,

package.json

@@ -1,26 +1,20 @@
 {
   "private": true,
-  "scripts": {
-    "install": "napa"
-  },
-  "napa": {
-    "blob": "eligrey/Blob.js.git",
-    "filesaver": "eligrey/FileSaver.js.git"
-  },
   "dependencies": {
     "WP-JS-Hooks": "github:carldanley/WP-JS-Hooks",
     "backbone": "1.3.3",
     "backbone.marionette": "3.2.0",
     "backbone.radio": "2.0.0",
     "backbone.supermodel": "1.2.0",
+    "blob-tmp": "^1.0.0",
     "classnames": "^2.1.3",
     "codemirror": "^5.8.0",
+    "file-saver": "^1.3.3",
     "handlebars": "3.0.3",
     "history": "1.13.1",
     "html2canvas": "0.5.0-alpha2",
     "interact.js": "~1.2.8",
     "moment": "^2.10.3",
-    "napa": "^1.2.0",
     "papaparse": "4.1.1",
     "parsleyjs": "^2.1.2",
     "react": "~15.4.2",

webpack.config.js

@@ -28,8 +28,7 @@ baseConfig = {
       'interact$': 'interact.js/interact.js',
       'spectrum$': 'spectrum-colorpicker/spectrum.js',
       'wp-js-hooks': 'WP-JS-Hooks/src/event-manager.js',
-      'blob$': 'blob/Blob.js',
-      'filesaver$': 'filesaver/FileSaver.js',
+      'blob$': 'blob-tmp/Blob.js',
       'papaparse': 'papaparse/papaparse.min.js',
       'helpscout': 'helpscout.js',
       'html2canvas': 'html2canvas/dist/html2canvas.js',
@@ -177,7 +176,7 @@ config.push(_.extend({}, baseConfig, {
       'spectrum',
       'sticky-kit',
       'blob',
-      'filesaver',
+      'file-saver',
       'velocity-animate',
       'newsletter_editor/communicationsFix.js',
       'newsletter_editor/App',
@@ -265,7 +264,7 @@ config.push(_.extend({}, baseConfig, {
       'backbone.radio',
       'select2',
       'blob',
-      'filesaver',
+      'file-saver',
       'velocity-animate',
 
       'mailpoet',
@@ -338,8 +337,7 @@ config.push(_.extend({}, baseConfig, {
       'sticky-kit': 'vendor/jquery.sticky-kit.js',
       'backbone.marionette': 'backbone.marionette/lib/backbone.marionette',
       'backbone.supermodel$': 'backbone.supermodel/build/backbone.supermodel.js',
-      'blob$': 'blob/Blob.js',
-      'filesaver$': 'filesaver/FileSaver.js'
+      'blob$': 'blob-tmp/Blob.js'
     },
   },
   externals: {