Removing a bunch of Wikia Ad crap
This shouldn't break anything. The only references I've found to the AdsenseForSearch.php file were in OldSkin.skin.php, which I've gone ahead and removed from it. If it breaks the OldSkin, which it shouldn't, but if it does, I don't really care because it's an ugly Wikia skin that we don't need or want to use.
Removing ad-related scripts
Update OldSkin.skin.php
Update NewSkin.php
Update AnswersOld.php
Removing unused Wikia Ad messages
Adding some TODO items
Merge pull request #4 from Brickimedia/create-TODO

Creating a TODO, as was suggested