Script fixes and new effects.

Cleaned up unneeded requires in some scripts
Fixed Second Wind
Added new effect scripts
Added bard song scripts that mostly work

data/scripts/effects/parsimony.lua

@@ -0,0 +1,17 @@
+require("modifiers")
+require("battleutils")
+
+--Forces crit of a single WS action from rear.
+function onMagicCast(caster, effect, skill)
+    skill.mpCost = skill.mpCost / 2;
+end;
+
+function onHit(effect, attacker, defender, action, actionContainer)
+    if action.commandType == CommandType.Spell then
+        --Parsimony returns 35% of damage done rounded up as MP.
+        local mpToReturn = math.ceil(0.35 * action.amount);
+        attacker.AddMp(mpToReturn);
+        actionContainer.AddMPAction(attacker.actorId, 33007, mpToReturn);
+        actionContainer.AddAction(attacker.statusEffects.RemoveStatusEffectForBattleAction(effect));
+    end
+end