RA Sniper HP reduced from 200 to 80.
Iron Curtain duration increased from 15 to 20. Chronosphere duration decreased from 30 to 20.
MRJ missile deflection range increased from 3 to 4.
Increase repair of mechanic from 13 to 20. Increase light armour multiplier percentage from 40% to 100%.
Merge pull request #3489 from ScottNZ/balance

More RA balance work