Closes #31

The bandwidth limit input fields were missing a unit confusing users as to which value should be entered. It's kbit/s for both.

The whole status page should be rewritten ASAP, but this fix will at least
make it work again for now...

Otherwise, the state match doesn't work, not allowing replies to outgoing
packets to get in.

This also fixes the type of a few fields which were strings instead of numbers.

Original patch by Daniel Ehlers <danielehlers@mindeye.net>

For security reasons we should not accept incoming packets per default
and instead allow specific services on specific interfaces.

/lib/gluon/release had been lost during the conversion to the new site config
format.

gluon-autoupdater: Always allow forced autoupdate.

On nodes with autoupdate disabled the cmdline parameter '-f' has no
effect. But using the autoupdater for manual updates is quite handy.

gluon-alfred: replace announce.sh with lua script