New Replace dialog

[Dreamer]

Instead of standard Confirm File Replace dialog when copied/moved file with the same name, show this dialog (from another request "Find similar files"):

"Large dialog with 2 viewer windows, with ability to use plugins and standard viewer features. It would be possible to compare also txt, nfo, mp3 files...
There should be also size - auto (KB/MB/GB) and in bytes and following buttons:
[Replace] [Skip] [Delete original (left)] [Replace all] [Skip all] [Cancel]

When any button would be pressed, close the dialog instead of switch to next file.

This feature would be useful when replacing the file with the same filename, e.g. for images (2 images and info will be shown), mp3s (id3tag and bitrate will be shown)... So it will be easy to choose if the file should be replaced or not.