Avoid redundant addition of trailing slashes to folder names.
Avoid redundant addition of trailing slashes to folder names.

The Utility.EnumerateFilesAndFolders method will append the trailing
slash as needed.

mnaiman/duplicati,sitofabi/duplicati,sitofabi/duplicati,sitofabi/duplicati,mnaiman/duplicati,sitofabi/duplicati,duplicati/duplicati,sitofabi/duplicati,duplicati/duplicati,duplicati/duplicati,mnaiman/duplicati,mnaiman/duplicati,duplicati/duplicati,mnaiman/duplicati,duplicati/duplicati