Mana replacement (-> Any)

[moomarc]

There's a small bug with Pulse of Llanower (or any card that replaces mana with "Any"), where if you try produce the mana while paying for an ability/spell you are prompted twice with which mana you want to replace the default type. This does not apply when generating the mana before playing an ability/spell, so for some reason the replacement is run twice during a cost payment. This becomes especially noticeable when using Harvest Mage and any land that produces more than 1 mana (HM is scriptable with a minor tweak to the code). I'll commit the change and Harvest Mage script, but if we can't resolve the issue it should probably be removed before the next beta.

Edit: I think it's because AbilityManaPart.canProduce(String,SpellAbility) calls the applyManaReplacement which makes the user choose a replacement colour. I'm not sure how to fix it though.