2.0.0.0-dev69

* Themes update:
  * LESS styles library added in pub/lib/css/
  * A new Blank theme set as default
* GitHub requests:
  * [#491](https://github.com/magento/magento2/pull/491) -- Fixed bug, incorrect auto-generation Category URL for some groups of symbols (idish, cirrilic, , , and other).
  * [#480](https://github.com/magento/magento2/pull/480) -- Fixing a bug for loading config from local.xml
  * [#472](https://github.com/magento/magento2/issues/472) -- Params passed in pub/index.php being overwritten
  * [#461](https://github.com/magento/magento2/pull/461) -- Use translates for Quote\Address\Total\Shipping
  * [#235](https://github.com/magento/magento2/issues/235) -- Translation escaping
  * [#463](https://github.com/magento/magento2/pull/463) -- allow _resolveArguments to do sequential lookups
  * [#499](https://github.com/magento/magento2/issues/499) Deleted unclosed comment in calendar.css
* Fixed bugs:
  * Fixed a fatal error that occurred with a dependency in pub/errors/report.php
  * Fixed an issue where code coverage failed for Magento\SalesRule\Model\Rule\Action\Discount\CartFixedTest
  * Fixed an issue where PayPal Express Checkout redirected to the PayPal site even though the Allow Guest Checkout option was set to 'No'
  * Fixed an issue where invalid password reset link was sent when resetting customer password from the backend
  * Fixed an issue where it was not possible to download a previously created backup
  * Fixed a security issue with possibility of a XSS injection in the Integration re-authorization flow
  * Fixed an issue where Billing Agreement cancellation from the backend did not work
  * Fixed an issue with the debug section in the developer settings
  * Fixed the unreliable implementation of the fetching authorization header via SOAP
  * Fixed issues with WSDL generation error reporting
  * Fixed an issue with incorrect order of the Recurring Profile tab in Account Customer on the frontend
  * Fixed an issue when the information about a custom option of the 'File' type was not displayed correctly on the recurring profile page
  * Fixed an issue with editing Product template
  * Fixed an issue with duplicated shipping method options during checkout
  * Fixed an issue where flat indexers were re-indexed in shell when they were disabled
  * Fixed an issue where adding a wrong/nonexistent SKU using 'Order by SKU' from My Account caused a fatal error
  * Fixed an issue with the JS/CSS merging functionality
  * Fixed an issue with static view files publication tool used for the 'production' mode
* Modularity improvements:
  * Removed the deprecated GoogleCheckout functionality
  * Removed all dependencies on the RecurringPayment module
  * Removed the Sales module dependencies on Customer models/blocks
  * Renamed the RecurringProfile module to RecurringPayment
  * Resolved dependencies between the Email Templates functionality and other modules
  * Moved Core module lib-only depended components to library
  * Moved CSS URL resolving logic from publisher to the separate CSS pre-processor
  * Re-factored the View publisher
* Framework improvements:
  * Added restrictions on the data populated to the Service Data Object
  * Renamed Data Transfer Object to Service Data Object
  * Updated the view files population tool to support LESS
* Customer Service usage:
  * Refactored the Tax module to use Customer service layer
  * Refactored Customer module Adminhtml internal controllers and helper to use Customer services
  * Added and updated the Customer service APIs
  * Exposed Customer services as REST APIs
* Indexer implementation:
  * Implemented a new optimized Product Price Indexer
* Updated various PHPDoc with the parameter and return types