deleting a directory

[johnscancella]

When deleting a directory in a saved bag, bagit only deletes the files (since that is all the spec cares about). This causes confusion since after a save, bagger reloads the payload directory from what is on the system. Thus a directory that WAS gone reappears.

To reproduce this:

• create a bag with directories
• save bag to a location on disk
• delete a directory
• save the bag again to the same directory
• EMPTY directory appears in the bagger UI

[johnscancella]

fixed in release 2.7.5