Namadillo: Review copy of sign popup expires

[euharrison]

If the sign popup opens and you don't sign, after a few time the popup listener is destroyed and an error notification is displayed

We need to review the copy of this notification to be more friendly for the user

Notification:

If you try to sign the popup after this message, you also got an error message on the popup as well:

[ChrisHoltDesign]

Transfer Transaction failed
Signing failed: Transfer timed out while waiting for user response

or something like that. Zach may have better

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Would it be possible to auto close the pop up if the transfer fails to avoid a user submitting after failure?