pfSense

Changes to make PPP work again. mpd5 fails to establish a ppp link without
some username and password, so defaults are set if user enters nothing.
Removed interface_ppp_configure call from interfaces_ppp_edit.php. It was
useless there with the new structure, and it caused all PPP links to attempt...

Forgot re-editing.

Fix interface assignment and re-edit

Fix displaying ppp ports.

Fix PPP assignment.

Don't need the rm -f statement when using > redirect to overwrite the
file, and add the "then" to the if statements

Fix mistakes (now using "call" instead of "goto") and add check to SIM PIN setting routine
so we don't have to set the pin every time if it's already set.

Be safer use the remote-ip address for adding route.

Explicitly set the exit status of the script to not make mpd fail.

Use full patch to command and fix route add command parameter is -iface and not -if.