[TW] Core/Spells: DK Bloodworms Talent

Change the effect diesides of the summon effect to summon 2-4
bloodworms. Looks like this should be inherited from the trigger aura
but it's not.
Merge pull request #18 from gecko32/Truewow

[TW] Core/Spells: DK Bloodworms Talent
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb
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