FreeNAS Code

Make sure it is not possible to execute anything if session has been timed out. Because of that 'auth.inc' MUST be included at FIRST in EACH php script.

Fix JPCERT/CC JVN#89791790 (Cross-site scripting vulnerability).

Add get_filesize function to fix PHP problem with files > 2GB.

Fix rendering problem.

Add missing translations.

Add quixplorer link to WebGUI 'Advanced|File Manager'.

Adapt WebGUI layout to new style.

Fix typos.

- Remove CSS style from tabs HTML code
- Mass copyright update

Use htmlspecialchars instead of htmlentities.