Deleted masterlist files, Oblivion and Skyrim files.

Garybash has nothing to do with Oblivion or Skyrim, and so shouldn't
include any such files. It's going to be complicated enough working on
it without adding even more stuff that's not relevant.
Renamed taglists folder.

To match the folder structure used by Wrye Bash. That way, there's less
confusion if/when they become mergeable.