Image artifacts
We have some issues, that have weird image links 
, 
and 
e.g.
https://public-redmine-archive.tails.boum.org/code/issues/17152/#note-7
It seems like an artifact by the textile2markdown converter.
@enrico: Don't know if it is worth fixing it. I just wanted to document it, that this is broken. We will decide later, about the priority.