added GET and POST support for nested resources:
GET /venue/1212989832763/images list all images for this venue
POST /venue/1212989832763/images will add an image to the venues images resource
implemented this by adding extra BELONGS_TO_<model> attribute with the parent object ID codes ass a STRING (not a float !) prefixed with R_
in this way we can implement the nested GET as an extra FILTER : BELONGS_TO_<model> == R_<parent_model_id>

also reverted back the route definitions, the new version breaks the (user) test and cleaned up some log statements