Port to Spree 2.0 translations
Namespace these to spree:
Merge pull request #113 from rterbush/translations

Port to Spree 2.0 translations
Bumping Versionfile for 2-0-stable
Bumping Version
More to gitignore.
Updated engine for Spree 2.x
Updated spec helper.

- Fuubar for spec runs.
- SimpleCov and Coveralls.
- DatabaseCleaner etc.
Cleanup specs.
Fuubar config for rspec.
Add i18n locale spec.
Fix all messy locales.

- Fix loads of missing translations keys.
- Remove duplicated locales.
- Change locale names to basename pointless to have them in sub dialect.
Add Swedish locale.
Cleanup migrations.
Tidy up the code.
Updated readme and change Travis config.