Add "edited" to "Marks" tab

[b-]

Most of my duplicates came from accidentally importing an entire memory card into my library without formatting it. This means that if I worked on/edited/processed the photos before importing, I now have two copies of the same photo but some of them are already edited.

When choosing which one of duplicates to keep, I'd prefer to keep the one that is edited (if there is one).

For some reason my luck has it that Teekesselchen seems to prefer to mark the "edited" photo as rejected, which means I need to retag or rerun it to flip that mark and delete the "unedited" duplicates instead. This is the opposite of the behavior I'd like.

Something similar was proposed in #9 but it's vague and I wanted to make this feature request easier to read.

Thank you!