Fix AV battle standards (#537)

Frostwolf/Stormpike Battle Standards are no longer consumed on use
Stormpike Battle Standard and Alliance Battle Standard now share a cooldown
Fixes LightsHope/server#459

sql/migrations/20171108160532_world.sql

@@ -0,0 +1,19 @@
+DROP PROCEDURE IF EXISTS add_migration;
+delimiter ??
+CREATE PROCEDURE `add_migration`()
+BEGIN
+DECLARE v INT DEFAULT 1;
+SET v = (SELECT COUNT(*) FROM `migrations` WHERE `id`='20171108160532');
+IF v=0 THEN
+INSERT INTO `migrations` VALUES ('20171108160532');
+-- Add your query below.
+
+UPDATE `item_template` SET `spellcharges_1`='0', `spellcategory_1`='1153', `spellcategorycooldown_1`='120000' WHERE `entry`='19045' and`patch`='3';
+UPDATE `item_template` SET `spellcharges_1`='0' WHERE `entry`='19046' and`patch`='3';
+
+-- End of migration.
+END IF;
+END??
+delimiter ; 
+CALL add_migration();
+DROP PROCEDURE IF EXISTS add_migration;