Core/Players: Several currency fixes and improvements

Port From (https://github.com/TrinityCore/TrinityCore/commit/03918978c166c9fb191117a0cae9ba1285bf0e37)

Source/Game/Spells/Spell.cs

@@ -4495,7 +4495,7 @@ namespace Game.Spells
             }
 
             foreach (var reagentsCurrency in m_spellInfo.ReagentsCurrency)
-                p_caster.ModifyCurrency(reagentsCurrency.CurrencyTypesID, -reagentsCurrency.CurrencyCount, false, true);
+                p_caster.RemoveCurrency(reagentsCurrency.CurrencyTypesID, -reagentsCurrency.CurrencyCount, CurrencyDestroyReason.Spell);
         }
 
         void HandleThreatSpells()

Source/Game/Spells/SpellEffects.cs

@@ -4729,7 +4729,7 @@ namespace Game.Spells
             if (!CliDB.CurrencyTypesStorage.ContainsKey(effectInfo.MiscValue))
                 return;
 
-            unitTarget.ToPlayer().ModifyCurrency((uint)effectInfo.MiscValue, damage);
+            unitTarget.ToPlayer().ModifyCurrency((uint)effectInfo.MiscValue, damage, CurrencyGainSource.Spell, CurrencyDestroyReason.Spell);
         }
 
         [SpellEffectHandler(SpellEffectName.CastButton)]
@@ -4847,6 +4847,18 @@ namespace Game.Spells
             }
         }
 
+        [SpellEffectHandler(SpellEffectName.IncreseCurrencyCap)]
+        void EffectIncreaseCurrencyCap()
+        {
+            if (effectHandleMode != SpellEffectHandleMode.HitTarget)
+                return;
+
+            if (damage <= 0)
+                return;
+
+            unitTarget.ToPlayer()?.IncreaseCurrencyCap((uint)effectInfo.MiscValue, (uint)damage);
+        }
+
         [SpellEffectHandler(SpellEffectName.SummonRafFriend)]
         void EffectSummonRaFFriend()
         {

Source/Game/Spells/TraitManager.cs

@@ -384,7 +384,7 @@ namespace Game
                             if (!currencies.ContainsKey((int)currency.Id))
                                 currencies[(int)currency.Id] = 0;
 
-                            currencies[(int)currency.Id] += (int)player.GetCurrency((uint)currency.CurrencyTypesID);
+                            currencies[(int)currency.Id] += (int)player.GetCurrencyQuantity((uint)currency.CurrencyTypesID);
                             break;
                         case TraitCurrencyType.TraitSourced:
                             var currencySources = _traitCurrencySourcesByCurrency.LookupByKey(currency.Id);