Scripting/Storm Peaks: Add spell script for spell_jokkum_scriptcast.

Quest 13010 Krolmir, Hammer of Storms is not yet fully scripted but is now completeable.

sql/updates/world/2013_11_24_0_world_spell_script_names.sql

@@ -0,0 +1,2 @@
+DELETE FROM `spell_script_names` WHERE `spell_id`=61319;
+INSERT INTO `spell_script_names` (`spell_id`,`ScriptName`) VALUES (61319, 'spell_jokkum_scriptcast');