Add lightbox keyboard navigation

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/pnf_gallery/trunk@76074 735d13b6-9817-0410-8766-e36946ffe9aa
[BUGFIX] multilingual in categories list 

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/pnf_gallery/trunk@76493 735d13b6-9817-0410-8766-e36946ffe9aa