fixed Pimcore_Controller_Action_Helper_Json (do not modify the original objects)

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3728 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
fixed Pimcore_Controller_Action_Helper_Json (do not modify the original objects)

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3729 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2910) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3730 1f8fe7d8-47f0-464c-8d0a-336f4953ab05