* include/javascript/pandora.js: fixed the doc header for the
function "agent_autocomplete" that was very wrong, and now in this
function when call with the id_server_name equal to false, the
function doesn't save the id_server in hidden input.
* include/functions_agents.php: added function
"agents_check_agent_exists" that check if any agent exists into the
DB (of course you can check if exist and it is enabled).
* operation/search_agents.php: fixed the link to manage the agents
show in the search.
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@6790 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f
08103d5b90