Redefine text instead of clearing and regeneration.
I like this method of manipulation much better; got rid of the old list
box and added a contextmenu to the Received List.
Also added Drag&Drop support.
Big thanks to Siobonbon for finally clearing up the muck that had been
sitting around for so long 👍
The mysterious dex flags are much clearer now, there is no 'via trade'
flag (it's the forms owned flag)
