Allow .tdf design files to transfer picture name to the game

[seawolf]

.tdf files (templates) have a line for which ship picture they use.  However, this is cleared when the AI or player uses them.  If the picture name transferred it would be quite easy to just create generic ship pictures that all AI designs would initially have

[seawolf]

Gonna bump this because its a fairly simple change that could greatly improve visuals in game