2.0.0.0-dev61

* Introduced a new layout block attribute - cacheable
* Fixed bugs:
  * Fixed an issue with displaying configurable product images in shopping cart
  * Fixed an issue with Tax Summary not being displayed properly on the Order Review page
  * Optimized the Plushe theme CSS
  * Fixed attribute types for configurable product variations
  * Fixed an issue with incorrect link in the Reset Password email for customers registered on the non-default website
  * Fixed an issue with creating orders using DHL on holiday dates
  * Fixed product export
  * Fixed 3D secure validation
  * Fixed an issue with session being lost when a logged in user goes from store pages using secure URL to the store pages which do not use secure URL
  * Fixed an issue with price ranges in the Advanced search