YAMon v4 Update... almost ready for beta testing

YAMon 4.0.6 seems to work fine, but only after a tweak: as noted on http://usage-monitoring.com/v4Install+Validate.php

There's currently a bug (v4.0.6 and lower) for Turris/OpenWrt users: the yamon symlink above is not being created and the reports open with a page not found error.

You can manually create the symlink by opening a PuTTY window and running: ln -s /tmp/www /www/yamon