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
  * ...