[TYPO3-mvc] Submit a backend modules f:form as "get"

[Jan Kornblum]

>> i'd like to submit a backend modules f:form as "get", but this results in a 
>> "Invalid form/module token detected. Access Denied!".
>>
>> Submitting the same form as "post" instead works fine.
>>
>> What am i missing?

In between i've figured out that submitting as GET causes all 
parameters to be dropped of from the query string. That's why the 
"moduleToken" gets lost.

Now i have to make the moduleToken (and M parameter) available as a 
hidden input field inside the form.

But how can i access the current moduleToken from FLUID or from inside 
the controller?

Kind regards,
Jan