Fix IMG_PNG constant error, jquery update, other minor fixes

Big fix with IMG_PNG constant use. Switched to IMAGETYPE_*

Some code cleanup in config files (array, DEFINE->define, etc)

Code cleanup in DB:IO class, especially for consistent returning
array/single data blocks

Some javascript core lib update

www/configs/config.path.php

@@ -16,6 +16,6 @@
 		'perl_bin' => '',
 		'other_url' => '',
 	]
-]*/
+];*/
 
 // __END__