2.0.0.0-dev71

* Fixed bugs:
  * Fixed an issue with displaying product on the frontend when the product flat indexer is enabled
  * Fixed an issue with applying catalog price rules on the category level
  * Fixed an issue where the essential cookies like CUSTOMER, CART, and so on were not created in Google Chrome
  * Fixed an issue with placing orders by customers assigned to a VAT group
  * Fixed an issue with incorrect error message during registration, and inability for a shopper to ask for resending a confirmation email
  * Fixed an issue where the Catalog module resource Setup Upgrade logic was broken
* Modularity improvements:
  * Moved abstract Core models and related logic to the Magento/Model library
  * Moved the abstract DB logic and Core resource helpers to the Magento/DB library
  * Eliminated the Core\Model\App class
  * Moved the Magento Flag functionality to the library
  * Resolved dependency of the Catalog and related modules on the Review module
  * Moved indexers related logic from the Core module to the Indexer module
  * Moved the Inline translation and user intended translate functionality from the Core module to a separate Translation module
* Framework Improvements:
  * Covered Magento library components with unit tests:
     * Magento\Config
     * Magento\Convert
     * Magento\Controller
     * Magento\Data\Collection\Db
     * Magento\Mview
     * Magento\Url and Magento/Url.php
  * Covered Magento application components with unit tests:
     * Magento\Checkout\Model\Config
     * Magento\Checkout\Model\Observer
     * Magento\Checkout\Model\Type
     * Magento\Sales\Model\Config
  * Renamed LauncherInterface to AppInterface
* Improvements in code coverage calculation:
  * Updated the whitelist filter with library code for integration tests code coverage calculation
* GitHub requests:
  * [#512] (https://github.com/magento/magento2/issues/512) -- Theme Thumbnails not showing
  * [#520] (https://github.com/magento/magento2/pull/502) -- Corrected Search Engine Optimization i18n
  * [#519] (https://github.com/magento/magento2/issues/519) -- New Theme Activation
* Customer Service usage:
  * Refactored the Log module to use Customer Service
  * Refactored the RSS module to use Customer Service
  * Refactored the Review module to use Customer Service
  * Refactored the Catalog module to use Customer service layer
  * Refactored the Downloadable module to use Customer service layer