rename all config class into php_orchestra_backoffice
rename all config class into php_orchestra_backoffice

open-orchestra/open-orchestra-cms-bundle,open-orchestra/open-orchestra-cms-bundle,open-orchestra/open-orchestra-media-admin-bundle,open-orchestra/open-orchestra-media-admin-bundle,open-orchestra/open-orchestra-media-admin-bundle,open-orchestra/open-orchestra-cms-bundle