Mob 1532

@nandy-andy @RafLeszczynski @rogatty Please, review ;) DO NOT MERGE JUST YET
I would go with either one or another message. It seems they have the same content within fairly similar context: one describes an action which will take place after clicking a button, the other describes an action which is happening after the button has been clicked. 

@lgarczewski could you take a look and help us with this one, please? :)