automatic live display of satoshi in mBTC while typing

[renepickhardt]

I think it would be really nice and useful if the amount in satoshi that a user types would be depicted in parentheses in mBTC in this way if the amounts gets larger people would not get confused about number of digits. I think 10 k sats are easy to grasp but if one want to tip 10 mBTC it will be hard to type in sats without visual clue