Upload window closes after legacy modem

[muzy]

The upload window closes after legacy modem code is finished, not when all codes are finished.

[ChrisVeigl]

actually the window is closed immediately after a transfer is initiated:

webedit-react/src/Components/RightMenu.jsx

Line 74 in 3bb351a

transferWidgetOpen: false,

it would be nice to indicate a running transfer (via an animated icon or seperate window).