#3 Sort criteria differs between files and folders

[simplehuman]

This is some quick modifications the code to permit the
user to specify different sort criteria for folders
from files.

I wanted to sort images by date, descending (to keep
the latest upload first in the list) and sort folders
by name, ascending (so there is some sort of consistency).

The implementation is not the best. I believe my lack
of knowledge of PHP prevented me from making the
solution more elegant and efficient. However, it works.

[simplehuman]

Modified default configuration file

[simplehuman]

Modified default include\functions.inc.php file