This patch adds a handler for the helpplugin command.

This patch comes with a patch for cc-cli and a patch for cc-node.

With the permission of Romain Degez, CTO of Smartjog.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Object in TQL db was not updated to add or remove the close tag.