Prevent the user from leaving the page when he adds a new cardset or rep
As an user I want to be warned if I try to leave the page while I am editing the text of a new cardset or rep.
(For example, if I accidentally hit the back button)
As an user I want to be warned if I try to leave the page while I am editing the text of a new cardset or rep.
(For example, if I accidentally hit the back button)