Xenobiology SecHUD icon

Replaces the horribly ugly coder sprite (redundancy) with a much better variant made by Malsquando. Elected to go with the white on blue version to fit the general color scheme of the science secHUD icons but other than that I'm willing to go with the alternative.

See http://baystation12.net/forums/viewtopic.php?f=44&t=4294&start=660#p248937.