Warzone 2100 Graphic Mods tools

Frontend0 fixing contrast

Fix logic in shield regen code.

change frontedn0 to relate to project

Fix droid.h

Removed unused variable from combat.c

Added shields to droids, no visual effect yet, but combat wise shields are 100% functional.

changing rockies and urban baseplate to suit new factories

editing baseplate for new factories arizona

adding connectors to all three factories

editing texture for factory