Use a download button instead of downloading a file automatically

customize.dist/main.css

@@ -603,6 +603,14 @@ html.cp,
   font-family: lato, Helvetica, sans-serif;
   font-size: 1.02em;
 }
+.cp .unselectable {
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+}
 .cp h1,
 .cp h2,
 .cp h3,

customize.dist/translations/messages.fr.js

@@ -366,6 +366,7 @@ define(function () {
     out.upload_name = "Nom du fichier";
     out.upload_size = "Taille";
     out.upload_progress = "État";
+    out.download_button = "Déchiffrer et télécharger";
 
     // general warnings
     out.warn_notPinned = "Ce pad n'est stocké dans aucun CryptDrive. Il va expirer après 3 mois d'inactivité. <a href='/about.html#pinning'>En savoir plus...</a>";

customize.dist/translations/messages.js

@@ -371,6 +371,7 @@ define(function () {
     out.upload_name = "File name";
     out.upload_size = "Size";
     out.upload_progress = "Progress";
+    out.download_button = "Decrypt & Download";
 
     // general warnings
     out.warn_notPinned = "This pad is not in anyone's CryptDrive. It will expire after 3 months. <a href='/about.html#pinning'>Learn more...</a>";