Added some badges for various services
fixes #146 only live products returned for add to cart
closes #138 - unit test shows correct nested path returned
Merge pull request #180 from moveforward/138-checkoutpage-link

closes #138 - unit test shows correct nested path returned
Merge pull request #179 from moveforward/146-buyablefromrequest

fixes #146 only live products returned for add to cart
fixes #181 - corrects link in template
Merge pull request #182 from moveforward/181-checkout-link

fixes #181 - corrects link in template
fixes \#134 - variations are only deleted if the owner is deleted (not unpublished)
Merge branch '134' of github.com:moveforward/silverstripe-shop into 134

* '134' of github.com:moveforward/silverstripe-shop:
  #134 unit test - test if staged product still has variations
  Issue 134 - variations are only deleted if the owner is deleted (not unpublished)