Unify name filtering and type filtering to use row.Visable.

Would love to see this say "Check if a compatible of this mod exists for the given version of KSP", which is a little more descriptive. Would also love to see it make the version *mandatory*, since if `ksp_version` is null, we'll check to see if there's a version available for *any* version of KSP, which presumably there is (if that mod exists at all).