[wishlist] Changing (shortify) tracker names

[uzsolt]

I think it would be useful when can change tracker names in "Tracker Column". E.g. instead of
"http://my_favourite_tracker.info:XXXX/some_schars" change to "MyFavouriteTracker".
I think can create a list, "Search & Replace" style (if tracker name contains "my_favourite_tracker", replace to "MyFavouriteTracker"). Or maybe can be a new column ("Shorter Tracker Names"), so the original Tracker Column doesn't disappear.