Core/Scripting: Update npc_agnetta_tyrsdottar to use db gossip.

sql/updates/world/2013_06_26_00_world_conditions.sql

@@ -0,0 +1,4 @@
+-- Add Gossip Menu conditions for Agnetta Tyrsdottar
+DELETE FROM `conditions` WHERE `SourceTypeOrReferenceId` IN (15) AND `SourceGroup` IN (9874);
+INSERT INTO `conditions` (`SourceTypeOrReferenceId`,`SourceGroup`,`SourceEntry`,`ElseGroup`,`ConditionTypeOrReference`,`ConditionValue1`,`ConditionValue2`,`ConditionValue3`,`NegativeCondition`,`ErrorTextId`,`ScriptName`,`Comment`) VALUES
+(15,9874,0,0,28,12969,0,0,1,0,'','Agnetta Tyrsdottar - Show gossip option only if quest is not complete');