1.0-stable fixes

Working subscriptions for Spree 1.2-stable and Gibbon 0.4.6

* Fixes for 1-0-stable branch in order to make mailchimp work with gibbon v0.4 and spree v1.2
* Added :ro locale for front-end partials
* Removed exceptional gem for tracking errors and replaced with basic Exception handling
* Refactored css from install_generator to match the right file for branch 1-0-stable