Implement spell disables in Arenas and/or Battlegrounds

disables.patch

diff --git a/src/server/game/Conditions/DisableMgr.cpp b/src/server/game/Conditions/DisableMgr.cpp
index d7a769d..977d6ca 100755
--- a/src/server/game/Conditions/DisableMgr.cpp
+++ b/src/server/game/Conditions/DisableMgr.cpp
@@ -283,6 +283,18 @@ bool IsDisabledFor(DisableType type, uint32 entry, Unit const* unit, uint8 flags
                 if ((spellFlags & SPELL_DISABLE_PLAYER && unit->GetTypeId() == TYPEID_PLAYER) ||
                     (unit->GetTypeId() == TYPEID_UNIT && ((unit->ToCreature()->isPet() && spellFlags & SPELL_DISABLE_PET) || spellFlags & SPELL_DISABLE_CREATURE)))
                 {
+                    if (spellFlags & (SPELL_DISABLE_ARENAS | SPELL_DISABLE_BATTLEGROUNDS))
+                    {
+                        if (MapEntry const* mapEntry = sMapStore.LookupEntry(unit->GetMapId()))
+                        {
+                            if (spellFlags & SPELL_DISABLE_ARENAS && mapEntry->IsBattleArena())
+                                return true;                                    // Current map is Arena and this spell is disabled here
+
+                            if (spellFlags & SPELL_DISABLE_BATTLEGROUNDS && mapEntry->IsBattleground())
+                                return true;                                    // Current map is a Battleground and this spell is disabled here
+                        }
+                    }
+
                     if (spellFlags & SPELL_DISABLE_MAP)
                     {
                         std::set<uint32> const& mapIds = itr->second.params[0];
diff --git a/src/server/game/Conditions/DisableMgr.h b/src/server/game/Conditions/DisableMgr.h
index 0f9310a..5a2f7da 100755
--- a/src/server/game/Conditions/DisableMgr.h
+++ b/src/server/game/Conditions/DisableMgr.h
@@ -42,8 +42,11 @@ enum SpellDisableTypes
     SPELL_DISABLE_DEPRECATED_SPELL  = 0x8,
     SPELL_DISABLE_MAP               = 0x10,
     SPELL_DISABLE_AREA              = 0x20,
+    SPELL_DISABLE_ARENAS            = 0x40,
+    SPELL_DISABLE_BATTLEGROUNDS     = 0x80,
     MAX_SPELL_DISABLE_TYPE = (  SPELL_DISABLE_PLAYER | SPELL_DISABLE_CREATURE | SPELL_DISABLE_PET |
-                                SPELL_DISABLE_DEPRECATED_SPELL | SPELL_DISABLE_MAP | SPELL_DISABLE_AREA),
+                                SPELL_DISABLE_DEPRECATED_SPELL | SPELL_DISABLE_MAP | SPELL_DISABLE_AREA |
+                                SPELL_DISABLE_ARENAS | SPELL_DISABLE_BATTLEGROUNDS),
 };
 
 enum VmapDisableTypes