Users should not be able to click twice on a button

[fredo]

Some errors from the feedback resulted most likely from clicking twice on a button. If the response from the server and in the UI the user could think that the "click" did not work and tries it again. Since the server is purely stateless it can not know that this action was already triggered and will trigger it again. This could result in initiating an exchange twice (This could be the case why the nonce too low error happened).

We need to handle this in the UI which prevents the user from initiating a specific action twice.

[agatsoh]

I can pick this up