Reverted Rakefile.

Reverted to old style Rakefile because Thor was required twise which
cause instability in specs.
Fixed issue with i18n-spec.

- Fixed issue with i18n-spec.
- Add Fuubar for spec runs.
- Re add the locale spec.
- Fixed dependency so it don't pull in spree_dash or spree_sample.
Yaml lint all locales.

Now translations keys are sorted alphabetically for readability.