Add "No to all button" when copying a file.

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Hi just wanna make a suggestion to have a “No to all” button. I am using this Cruzer Blade flash drive for backing up my files everytime I made changes in my project. Im backing up my files similar to System restore in windows which I make a folder according to what day I made the changes and when I mess something up, I just choose the folder to which in the day it was working fine, so obviously it has multiple the same contents and I want it not to replace the existing files. I got more than 1k files to copy and it is so annoying to click No button multiple times. Hope you can make an update for this. Thanks and more power!