fieldcollections: fixed problem with wysiwyg editor close function

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2188 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
sites store: added main site per default to the store

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2189 1f8fe7d8-47f0-464c-8d0a-336f4953ab05
PIMCORE-1838 - Site-specific robots.txt

git-svn-id: http://www.pimcore.org/svn/pimcore/private/core/trunk@2190 1f8fe7d8-47f0-464c-8d0a-336f4953ab05