highres image thumbnail filename bugfix

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3873 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
demo update (multi language)

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3874 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (2955) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@3875 1f8fe7d8-47f0-464c-8d0a-336f4953ab05