[Shotwell] Select jpeg/raw file for deleting

[Christian Günther <christian-guenther gmx de>]

Shotwell seems to be the nearly perfect photo collection tool. It helps
that raw+jpg files are shown as one single picture. Really missing is
the feature to select, if the jpg, RAW or both files should be deleted.
Many hobby photographs want to keep the RAW file only for really good
pictures, and only the jpg for snapshots.

I hope the developers would get aware of this need.

Thanks for the tool

Chris