Changeset 1343 in eirsvn

Stuart:

• M8 armour replaced by Stuart Armour
• Health increased from 300 to 380
• Stuart reload from 5-6 to 5
• Reduce accuracy versus infantry in target table from 0.5 to 0.4
• Target table damage modifiers versus light vehicles set to 25% for PE/Wehr
• Target table penetration values versus P4, P4 IST, Ostwind, and Stug increased by 0.1

added new armor types:
sherman jumbo (panther skirts copy)
sherman sandbags (just sherman copy atm, not used)
allies stationary gun (just atg armor copy atm, used by flakvierling)
pe 22x armored car (replaces pe universal carrier armor, done)
pe 22x zimmerit (replaces wm halftrack armor, done)