Core/Spells: Fix stacking rules for Inspiration and Ancestral Healing

sql/base/world_database.sql

@@ -17742,8 +17742,8 @@ INSERT INTO `spell_group` (`id`, `spell_id`) VALUES
 (1094,34123), -- tree of life aura
 (1095,20138), -- Improved Devotion Aura
 -- Armor Increase Percentage Buff
-(1097,14892), -- Inspiration
-(1098,16176), -- Ancestral Healing
+(1097,14893), -- Inspiration
+(1098,16177), -- Ancestral Healing
 -- Cast Speed Slow
 (1100,1714), -- Curse of Tongues
 (1101,31589), -- Slow

sql/updates/world/2011_05_12_06_world_spell_group.sql

@@ -0,0 +1,2 @@
+UPDATE `spell_group` SET `spell_id` = 14893 WHERE `id` = 1097;
+UPDATE `spell_group` SET `spell_id` = 16177 WHERE `id` = 1098;