[TYPO3-commerce] extend mail templates

[Heiko Hänsge]

Hi Ingo,
> I think you cann add your own markers by additional marker hooks.
>   
Thanks, since I'm not really into 'using hooks' some examples or sources 
for examples would be great.

> PS: please configure your email / Newsreader client to show your real name!
Sorry, didn't have an eye on that and changed it right away .

regards
Heiko