When I want to edit a label I want to make sure I don't click delete accidentally so that I do not delete the label and remove it from all the emails.

I want to see a confirmation dialog similar to the one that's shown when deleting mails.

Estimation: 30min
Taken: 45min

Test note

• When deleting a label, a dialog asking if you really want to delete the label is shown
• If "Cancel" is chosen, the label is not deleted
• If "Ok" is chosen, the label is deleted