add wallet alias

src/js/controllers/preferencesAlias.js

@@ -0,0 +1,32 @@
+'use strict';
+
+angular.module('copayApp.controllers').controller('preferencesAliasController',
+  function($scope, $timeout, configService, profileService, go) {
+    var config = configService.getSync();
+    var fc = profileService.focusedClient;
+    var walletId = fc.credentials.walletId;
+
+    var config = configService.getSync();
+    config.aliasFor = config.aliasFor || {};
+    this.alias = config.aliasFor[walletId] || fc.credentials.walletName;
+
+    this.save = function() {
+      var self = this;
+      var opts = {
+        aliasFor: {}
+      };
+      opts.aliasFor[walletId] = self.alias;
+
+      configService.set(opts, function(err) {
+        if (err) {
+          $scope.$emit('Local/DeviceError', err);
+          return;
+        }
+        $scope.$emit('Local/AliasUpdated');
+        $timeout(function(){
+          go.path('preferences');
+        }, 50);
+      });
+
+    };
+  });