Specify input validation errors

[noel-jasper]

qrl-wallet v1.7 win10 ledger nano s

Hey, I'd appreciate some specific error messages for unexpected user input in the "Recipient" and "Amount" field on the "Send & Receive" page. Right now there is this general message on a new view: "Transaction Generation Failed Error: Custom validation failed".

I tried to send 10.1 Quanta but typed "10,1" and it would have been helpful to see: "Invalid amount" or "amount input is not a valid number".

Of course, input validation onClick of the "Confirm" button would be even more helpful :) right now the validation seems to happen after the click and the next page with the general error message has no navigation buttons. Therefore, I am forced to click on the left navbar and then have to confirm that I want to cancel the transaction. But that will reset the input fields so I have to start all over.

Error messages under the red-bordered input fields would be the most helpful way to figure out where the wrong input happened. Like this:

Keep up the good work 👍