reverted rev. #3948 (optimized property caching & invalidating for document, asset and object)

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3961 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2988) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3962 1f8fe7d8-47f0-464c-8d0a-336f4953ab05