Refactor for Spree 2-0-beta.

Major refactor in a couple of commits.

- Fixed issues with i18n spec that broke rake test_app.
- Deleted weird locale IL (it was not translated anyway).
- Fixed Rakefile issue with Thor that could random break specs.
- Updated Versionfile to actually target different Spree versions.
- General cleanup and format to ruby 1.9 style.
- Add English (intl) default locale (en.yml) that should be used as base reference for keys. 
- Updated README with information about locals that are partial now from Spree version 1.3 due to new translation keys etc.
- Add Foobar for tests that is nice for long spec runs.
- Yaml lint ALL locales so the keys are now sorted alphabetically to make it easy to reference.
- Bumped rspec-rails to 2.13
- Bumped sqlite3 to 1.3.7
- Add last integrity spec for locales that add 190 new tests (before only 3 tests) OBS! test now fails due to missing keys all over. I had to comment out pluralization tests because every locale miss this.