Fixed bug #17006: Language mode is broken as soon as a backend layout is...

Fixed bug #17006: Language mode is broken as soon as a backend layout is selected for the current page  (Thanks to Jo Hasenau)

git-svn-id: https://svn.typo3.org/TYPO3v4/Core/trunk@10065 709f56b5-9817-0410-a4d7-c38de5d9e867