[QUEST][WOTLK] Basic Chemistry

Fixes item cooldown from 1 min 30 seconds to 30 seconds, to remedy the
uncompletable quest [Basic Chemistry]. Please remove your items cache in
your World of Warcraft directory to reset the item cooldown.

data/sql/updates/pending_db_world/rev_1487514602617381300.sql

@@ -0,0 +1,3 @@
+INSERT INTO version_db_world (`sql_rev`) VALUES ('1487514602617381300');
+-- Table `item_template`
+UPDATE `item_template` SET `spellcooldown_1` = 30000 WHERE `entry` IN (44010);