Initial commit of etherpad-lite.sh, which is part of the sandboxed
design pattern.

Reworked the initscript for the sandboxed design pattern.

Signed-off-by: The Doctor <drwho@virtadpt.net>
Updated the node.js SlackBuild to the latest version from
slackbuilds.org.  We need it for the latest version of Etherpad-Lite,
anyway.

Signed-off-by: The Doctor <drwho@virtadpt.net>