PIMCORE-1943 - HighRes Thumbnails: allow "highResolution" as option in array config

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2760 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
PIMCORE-1943 - HighRes Thumbnails: allow "highResolution" as option in array config

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2761 1f8fe7d8-47f0-464c-8d0a-336f4953ab05