No protection against duplicated names...

There is currently nothing that prevents the user to create 2 profiles with the same name, which leads to very erratic behaviors.

For instance, let's say I:

• save the current profile to "test"
• save the current profile again to "test"
• delete one of the 2 "test" profiles

In the xfce4-panel-profiles GUI, I'll still see one "test" entry, but behind the scenes, the corresponding config files/dir on the FS is destroyed.

As a consequence, if I now try to, e.g., export this remaining "test" profile, the app crashes!

You should really add a protection against creating 2 profiles with the same name!