Formatted numbers for transmitted data in transfer queue

[rene2003]

I find it difficult to distinguish between

1258463539 bytes and
125863778 bytes

when reading the figures in the transfer queue,
especially as the figure is changing all the time. It
would be very helpful, if this figure would be show in
a formatted way using seperators like

1,258,463,324 bytes and
125,863,756 bytes

which immediately give you better impression about the
figure you are looking at.

[Alexander Schuch]

This has been requested already:
[ 823911 ] Transfer queue: separate number of bytes into 3-digit groups