Core/Spells: Add 45 seconds proc cooldown to Blackened Naaru Silver.

Closes #1509

Signed-off-by: Subv <s.v.h21@hotmail.com>

sql/updates/world/2012_04_13_03_world_spell_proc_event.sql

@@ -0,0 +1,4 @@
+-- Blackened Naaru Silver proc cooldown
+DELETE FROM `spell_proc_event` WHERE `entry`=45355;
+INSERT INTO `spell_proc_event`(`entry`,`schoolmask`,`spellfamilyname`,`spellfamilymask0`,`spellfamilymask1`,`spellfamilymask2`,`procflags`,`procex`,`ppmrate`,`customchance`,`cooldown`) VALUES
+(45355,0,0,0,0,0,0,0,0,0,45);