Modified to guard against exception

Signed-off-by: Herb Bowie <hbowie@mac.com>
Added LineWithBreak class

Signed-off-by: Herb Bowie <hbowie@mac.com>
Added webroot and relative

Added webroot scripting command and relative global variable to jointly allow templates to dynamically resolve a relative variable in order to get to the root of a website.

Signed-off-by: Herb Bowie <hbowie@mac.com>