Adds Attribution to Imgur.com
Updates to Arrow 1.7.0
Adds Ember I18n based localization.

* TODO: figure out how to do localization of attributes.
* Pending Localizations
  * verifypin section body.
  * cleanup album section body.
Adds default localization.
Adds pomo:build task to build translations.
Updates Arrow to 1.8.0.
Merges branch 'feature/localize-plugin' into develop