Manathor armor no longer goes 100 -> 150 -> 300 -> 300 with yellow armor in the map

+ ARMOR_MEGASPHERE added for finer granularity with armor types given
+ Yellow armor with armor mode 3 (old quake) is now red armor
+ Blue armor with armor mode 3 + yellow armor is now silver armor, not red armor
  (this makes the progression yellow -> red -> silver -> silver,
   instead of yellow -> yellow -> red -> silver)
  (without yellow, it's still yellow -> red -> silver)