replaced <?php echo with <?= in demo scripts, because this is as of PHP 5.4 always enabled

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@4098 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
demo: compressed images

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@4099 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
build auto version (3020) ...

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@4100 1f8fe7d8-47f0-464c-8d0a-336f4953ab05