* pandora_console/general/logon_ok.php: Made the query use sprintf (for security purposes)
* pandora_console/include/functions_db.php: Made all the database queries relying on a single query function for simpler management
Also made sure that no functions returned NULL because NULL is a valid database value. It will return an empty value or something
Also made a simple query cache array so that duplicate queries to generate a single page won't be repeated (ACL queries)
Also updated some other queries and functions (see the diff) and removed some old code
* pandora_console/estado_grupo.php: Now with working agents counter!
* pandora_console/general/footer.php: Just made a fancy counter that displays how much queries weren't duplicated (90 on some pages!!)
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@953 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f
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