Fix class picker for the repository visualization
Fix class picker for the repository visualization

The class picker for selecting the appropriate class to realize the
repository visualization was flawed. I replaced it with a more
conventional if-then-else code snippet. It works now.

Signed-off-by: Konrad Reiche <4ff0213f56e2082fcd8c882d04c546881c579ce4@gmail.com>

platzhirsch/metadata-census