Setting: Use only directory of origin

The origin member of the setting holds the originating _file_. Thus we
should strip of the file and take only the directory instead.
CliParser: Use correct origin

Since the CliParser specifies the origin as a directory and the Setting
uses a path to a file we need to append a directory seperator.

If there already is a directory seperator, it won't do any harm because
double directory seperators are usually parsed as one.