Update Notes for Dec 13

-Extractors now show what resource they are extracting in the Info Panel
-Steel now takes 3.5 seconds to build, down from 4 seconds. This should better indicate optimal resource inputs
-Help Menu formatting improvements
-Remove High Voltage (Blue) power to reduce complexity
-Sky Arc (Power Transmission Tower) now has a larger power radius with increased construction cost
-Fixed issue with terrain collision that allowed units to float through the air
-Fixed issue with ground height calculations. Projectiles should now properly collide with the ground
-Control Group crash fixes
-Fixed elusive belt crash. Huge shoutout to @Southpaw and @Qmzn working through the night to find a reliable repro
-Fixed crash when non-host disconnects