[FLOW3-general] remove sudo from setfilepermission command

["Christian Müller (FLOW3 Team)"]

> +1 check if the permissions are setable as user and if this is possible
> do it :D
> If not, ask the user for permissions
>
>
Problem you most likely would have is the apache group which should be 
set too. But might be worth a try... Anyone up for creating a patch? 
Would be awesome.

Cheers,
Christian