Webservice: Offer light mode for asset download

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2579 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
PIMCORE-1669 - Video/Image Asset: Button to clear Thumbnails + Information

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2580 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
PIMCORE-1703 - Redirects: Add Option to allow passthrough of URL-Parameters

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2581 1f8fe7d8-47f0-464c-8d0a-336f4953ab05