add menu item

[rijnsma]

Some entries are not removable.
I have a Remastersys-entry of a version that did not work right, which I like to remove,
because I switched to an older one. That one is in place in the menu.
But the old one doesn't disappear when I delete it in Alacarte.  :o No big deal, but not right.

[davidwillis]

Thanks Paul.  That worked perfectly!

[davidwillis]

Thanks to everyone else too for the help!

[paul59]

Great, happy Minecrafting

Paul