fix backup file download

src/js/controllers/index.js

@@ -694,19 +694,6 @@ angular.module('copayApp.controllers').controller('indexController', function($r
 
   self.csvHistory = function() {
 
-    function saveFile(name, data) {
-      var chooser = document.querySelector(name);
-      chooser.addEventListener("change", function(evt) {
-        var fs = require('fs');
-        fs.writeFile(this.value, data, function(err) {
-          if (err) {
-            $log.debug(err);
-          }
-        });
-      }, false);
-      chooser.click();
-    }
-
     function formatDate(date) {
       var dateObj = new Date(date);
       if (!dateObj) {

src/js/services/backupService.js

@@ -31,25 +31,18 @@ angular.module('copayApp.services')
             });
             $log.debug("case 3");
           } else {
-            // We're screwed, blob constructor unsupported entirely   
+            // We're screwed, blob constructor unsupported entirely
             $log.debug("Error");
           }
         }
         return out;
       };
 
-      var a = document.createElement("a");
-      document.body.appendChild(a);
-      a.style.display = "none";
-
+      var a = angular.element('<a></a>');
       var blob = new NewBlob(ew, 'text/plain;charset=utf-8');
-      var url = window.URL.createObjectURL(blob);
-      a.href = url;
-      a.download = filename;
-      a.click();
-      $timeout(function() {
-        window.URL.revokeObjectURL(url);
-      }, 250);
+      a.attr('href',window.URL.createObjectURL(blob));
+      a.attr('download', filename);
+      a[0].click();
       return cb();
     };
 
@@ -92,4 +85,4 @@ angular.module('copayApp.services')
       _download(ew, filename, cb)
     };
     return root;
-  });
+  });