fixed typo
fixed signature delimiter
signature
tos
prevent lightbox from being shared if empty

commit c69acb78d862cfdd66a4a3f34b55b9c8ef296748
Author: Philipp Kretzschmar <philipp.kretzschmar@gmail.com>
Date:   Wed Jun 18 10:25:12 2014 +0200

    show different error messages

commit 323aefa1133ce5cdd811e1e4aab5355e944944b1
Author: Philipp Kretzschmar <philipp.kretzschmar@gmail.com>
Date:   Tue Jun 17 16:20:10 2014 +0200

    prevent empty lightbox from being shared
hack to prevent overflow
decreased margin