Last login value, minor update for array to [, smarty include core

When logged in, the last loggedin time is stored in the edit_user table,
additional to the normal logging.

More array() to [] conversion in config files, etc

Javascript: add math.round

Basic Class: Fix key length array mapping to more efficiont loop run
DB/IO: some name fixes in get key function description/comments
SmartyExtended: add CORE CSS/JS file include if exists. Follows after
MAIN and BEFORE page and special

www/configs/config.other.php

@@ -11,11 +11,11 @@
 
 /************* CONVERT *******************/
 // this only needed if the external thumbnail create is used
-$paths = array(
+$paths = [
 	'/bin',
 	'/usr/bin',
 	'/usr/local/bin'
-);
+];
 // find convert
 foreach ($paths as $path) {
 	if (file_exists($path.DS.'convert') && is_file($path.DS.'convert')) {