Adding trailing slashes when listing directories

When listing backuped files, it was difficult to discriminate beytween
files and directories. Well, not anymore !

persoconf/main.py

@@ -402,6 +402,9 @@ if args.command == "list":
             # Print the files too if asked so
             if args.show_files:
                 for f in app_list[app].files:
+                    if os.path.isdir(persoconf.path + "/" + app + "/" + f):
+                        print("\t%s/" % f)
+                    else:
                         print("\t%s" % f)
 
     # Some apps were specified, so we list them with their files
@@ -416,6 +419,9 @@ if args.command == "list":
             
             # Print the app files
             for f in app_list[app].files:
+                if os.path.isdir(persoconf.path + "/" + app + "/" + f):
+                    print("\t%s/" % f)
+                else:
                     print("\t%s" % f)