extended REST client

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2571 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
REST Client: added brick and bricks getter

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2572 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
PIMCORE-1630 - Using "system" redirects for qr code mgmt, this allows a unique code independend from the target URL

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2573 1f8fe7d8-47f0-464c-8d0a-336f4953ab05