Server Navigator: Browse server side files and folders

This class presents browseable listings of the contents of a server side directory in a user friendly way.

Features:

- Password protection to avoid anyone from seeing your server files.
- IP address restriction to allow only the accesses of users from a given list of IPs addresses.
- Can skip files with certain file name extensions
- Uses image icons to distinguish each type of folder entry. By default, it uses icons from the Apache installation
- Can show the size of the contents of sub-folders