Merge pull request #2659 from bernarden/bug/2658-map-alias-on-welcome-email-if-present

Maps alias email variable for welcome emails.

src/Ombi/Controllers/IdentityController.cs

@@ -863,6 +863,7 @@ namespace Ombi.Controllers
         {
             var ombiUser = new OmbiUser
             {
+                Alias = user.Alias,
                 Email = user.EmailAddress,
                 UserName = user.UserName
             };