Fixed bug with new group settings. Added htmlspecialchars to hidden groupname form element so that group names with non-latin characters could still match database entries. Also added initalisation of $_SESSION['step'] if it doesn't exist. This may solve the bug_compat_42 issue.

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/trunk/unstable@889 b72ed6b6-b9f8-46b5-92b4-906544132732