DB IO updates for settings return, Smarty Extended update

Update core template main body with better position for overlib init,
pagename div id add, remove px from any size call (width)

DB IO adds return for config settings, fix db async check to always
return boolean only, add had error variable return method

Some minor fixes in Smarty Extended for some legacy admin page variables
needed.

Update Error reporting to be self containing with defines

www/admin/class_test.smarty.php

@@ -84,6 +84,7 @@ $options = [
 ];
 
 $smarty->DATA['drop_down_test'] = $options;
+$smarty->DATA['drop_down_test_selected'] = '';
 $smarty->DATA['loop_start'] = 2;
 // require BASE.INCLUDES.'admin_smarty.php';
 $smarty->setSmartyVarsAdmin();