fix: add auto-newline between quoted and not-quoted lines
fix: add auto-newline between quoted and not-quoted lines

We often have the problem that users post something like this

> quote lala
user comment

To avoid confusion (markdown says that this is one block) we
automatically add a newline between the quoted line and the non-quoted
line. This is not compatible to markdown but we are ok with this.

Fixes #224

CountOrlok/cforum,CountOrlok/cforum,ckruse/cforum,MatthiasApsel/cforum,ckruse/cforum,MatthiasApsel/cforum,CountOrlok/cforum,MatthiasApsel/cforum,ckruse/cforum,CountOrlok/cforum,MatthiasApsel/cforum,ckruse/cforum