First version of gallery. Currently supports only one image/lexeme

git-svn-id: http://voronet.francu.com/repos/DEX@992 8d550267-2627-4c68-899f-85492a8dd5ca
Weirdly some changes weren't commited. Also moved an image from styles folder to img folder.

git-svn-id: http://voronet.francu.com/repos/DEX@993 8d550267-2627-4c68-899f-85492a8dd5ca