Description stamp does not allow null / empty values

[pygillier]

In v0.5, the description stamp field is prefilled with "Added via AlfreDo - {timestamp}".

When I try to empty it, I can save but after closing / opening the configure window, it goes back to the default text.

Expected result: being able to remove all text in this field.

[giovannicoppola]

thank you for reporting @pygillier ! This should be fixed now. Let me know if you notice anything else.