[IMPROVE] DOT max send logic

[realpaaao]

Currently the DOT max send logic is not very user friendly.

Please:

• [ ] When sending max amount deduct the correct gas to send the max amount, draining the whole address without the user manually subtracting the gas fee.

• [ ] When sending that account would fall below 1 DOT threshold, send pop up message "Keep account balance above 1 DOT. The remaining funds will be lost if balance is below 1 DOT" and prevent user to send funds.

So essentially only allow sends where remaining balance is above 1 DOT or a complete MAX send of the balance

[enriquesouza]

That is how we were behaving previously: "So essentially only allow sends where remaining balance is above 1 DOT or a complete MAX send of the balance"

[realpaaao]

I think before max send was not possible as allow_death was disabled. but yes essentially this. So no user could by accident loose funds under 1 DOT. And instead of a red error message we need a shorter one in a pop up, as described in the issue.