[Feature] New SPAs pass 1 (#1454)

* Implemented SPA Duration Pct

Implemented new spell effects
SE_Duration_HP_Pct 			524
SE_Duration_Mana_Pct			525
SE_Duration_Endurance_Pct		526

Consumes 'base1' % of your maximum health/mana/endurance every 6 seconds. 'max' is maximum amount that can be consumed per tic.

Additional Functionality
Can be used as a heal/gain % by setting the base1 value to a positive.

* Implemented SPA Instant Mana/End pct

Fixes for SPA 524-526
Implemented
SE_Instant_Mana_Pct			522
SE_Instant_Endurance_Pct		523

Extracts 'base1' percent of your maximum mana/endurance, or 'max', whichever is lower.

* Implemented: SPA 521 EndAbsorbPctDmg

Implemented
SE_Endurance_Absorb_Pct_Damage 521

Absorb Damage using Endurance: base1 % (base2 End per 1 HP)
Note: Both base1 and base2 need to be divided by 100 for actually value

* Implemented SE_HealthTransfer 509

Implemented
SE_Health_Transfer			509
'life burn'
Consume base2 % of Hit Points to Damage for base % of Hit Points

Can be used for heal
Act of Valor

* Implemented SPA 515,516,518,496

Implemented
SE_AC_Avoidance_Max_Percent 515
SE_AC_Mitigation_Max_Percent	516
SE_Attack_Accuracy_Max_Percent	518
Above are stackable defense and offensive mods

SE_Critical_Melee_Damage_Mod_Max	496 - This is a non stackable melee critical modifier

* Implemented SPA 503 , 505

SE_Melee_Damage_Position_Mod	503
define SE_Damage_Taken_Position_Mod	505

SPA 503 increase/decreases melee damage by percent base1 based on your position base2 0=back 1=front

SPA 504 increase/decreases melee damage taken by percent base1 based on your position base2 0=back 1=front

* Implemented 467,468

Implemented
SE_DS_Mitigation_Amount		467
SE_DS_Mitigation_Percentage	468

Reduce incoming DS by amt or percentage. base1 is value, if a reduction is desired it should be set to negative for both.

* Fixes

Formula fixes

* Update spdat.h

Added spa descriptions.

* Fixes for PR

removed debug shouts
fixed description issue

zone/lua_stat_bonuses.cpp

@@ -1162,7 +1162,7 @@ uint32 Lua_StatBonuses::GetMitigateDotRune(int idx) const {
 
 uint32 Lua_StatBonuses::GetManaAbsorbPercentDamage(int idx) const {
 	Lua_Safe_Call_Int();
-	return self->ManaAbsorbPercentDamage[idx];
+	return self->ManaAbsorbPercentDamage;
 }
 
 int32 Lua_StatBonuses::GetImprovedTaunt(int idx) const {