moving clrl pkg into devDependencies

`cldr` depends on `libxmljs`, which use native `.node` files, which will not work in SD/ynpm. Apparently, the `optionalDependencies` will fail silent only if the module itself fails, but not when some of the dependencies fails.

Anyhow, since the `cldr` is only used when in development, we can simply move `cldr` to the `devDependencies` and flight with it.