[PD] translations for pdpedia templates

[Georg Holzmann]

Hallo!

> $inlets = "Inlets";
> $outlets = "Outles";

I use in german also the terms Eingang and Ausgang - don't know what the 
others think ...

> $arguments = "Argumente";
> $messages = "Messages";       # not sure about this one.
>                               # german would be 'Nachrichten', but
>                               # noone seems to use it.

Hm ... I also don't use Nachrichten, but it does not sound that bad ...

LG
Georg