improve scan progress and fix a few bugs

MediaBrowser.Api/UserService.cs

@@ -281,7 +281,6 @@ namespace MediaBrowser.Api
             {
                 IsHidden = false,
                 IsDisabled = false
-
             }, true, true);
         }
 
@@ -395,10 +394,11 @@ namespace MediaBrowser.Api
                 throw new MethodNotAllowedException("Hashed-only passwords are not valid for this API.");
             }
 
+            // password should always be null
             return Post(new AuthenticateUserByName
             {
                 Username = user.Name,
-                Password = null, // This should always be null
+                Password = null,
                 Pw = request.Pw
             });
         }