2.0.0.0-dev54

* Modularity improvements:
  * Breakdown of the Adminhtml module:
     * Moved Newsletter, Report logic to the respective modules
     * Moved blocks, config, view, layout files of other components from Adminhtml folder to respective modules
  * Removed application dependencies from the library
* Move Magento\Core common blocks in the library
* Application areas rework:
  * Areas are independent from Store
  * Removed deprecated annotation from the getArea methods
* GitHub requests:
  * [#245](https://github.com/magento/magento2/pull/245) -- Resolve design flaws in core URL helper
  * [#247](https://github.com/magento/magento2/pull/247) -- Bug in Mage_Page_Block_Html_Header->getIsHomePage
  * [#259](https://github.com/magento/magento2/pull/259) -- Turkish Lira (TRY) is supported for Turkish members.
  * [#262](https://github.com/magento/magento2/pull/262) -- Update Rule.php
  * [#373](https://github.com/magento/magento2/pull/373) -- [Magento/Sales] Fixed typos
  * [#382](https://github.com/magento/magento2/pull/382) -- [Magento/Core] Fixed typos
  * [#304](https://github.com/magento/magento2/pull/304) -- Removed Erroneous closing "
  * [#323](https://github.com/magento/magento2/pull/323) -- InstanceController.php - made setBody protected
  * [#349](https://github.com/magento/magento2/pull/349) -- Move Mage_Catalog menu declaration into Mage_Catalog module.
  * [#265](https://github.com/magento/magento2/pull/265) -- Update Merge.php
  * [#271](https://github.com/magento/magento2/pull/271) -- Check Data should validate gallery information
  * [#305](https://github.com/magento/magento2/pull/305) -- Extra ", tidied up nested quotes
  * [#352](https://github.com/magento/magento2/pull/352) -- Add Croatia Country as part of European Union since 1st July 2013 for default european local countries in configuration
  * [#224](https://github.com/magento/magento2/pull/224) -- Tax formatting is locale aware and should not
  * [#338](https://github.com/magento/magento2/pull/338) -- Correcting SQL for required_options column
  * [#327](https://github.com/magento/magento2/pull/327) -- cart api bug fix & partial invoice credit memo divide by zero warning
* Themes update:
  * Old frontend (magento_demo) and backend (magento_basic) themes are removed
  * Updated templates and layout updates in the Bundle, Catalog, CatalogInventory, CatalogSearch, Downloadable, ProductAlert, Reports, Sendfriend modules
* Fixed bugs:
  * Fixed the error when  Magento cannot be reinstalled to the same database with table prefix
  * Fixed report Products in Cart
  * Fixed error on attempt to insert image to CMS pages under version control
  * Fixed order status grid so that you can assign state, edit, and view custom order status
  * Fixed Related Products Rule page so that category can be selected on conditions tab
  * Fixed Magento_Paypal_Controller_ExpressTest integration test so it is re-enabled
  * Fixed the bug with international DHL quotes