This update addresses some bugfixes and one critical security issue.

# Fixed critical issue with highlighting - Discovered and fix provided by Ron van Daal
# Url descriptions able to be wrapped over more than one line again
# Fixed bug with eAccelerator in admin_ug_auth.php
# Check new_forum_id for existence in modcp.php - alessnet
# Prevent uploading avatars with no dimensions - Xpert
# Fixed bug in usercp_register.php, forcing avatar file removal without updating avatar informations within the database - HenkPoley
# Fixed bug in admin re-authentication redirect for servers not having index.php as one of their default files set