Fixed issue where relationship-spanning lookups failed
Fixed issue where relationship-spanning lookups failed

Instead of returning Field subclasses, error conditions rose
AttributeErrors during lookup when objects such as
SingleRelatedObjectDescriptor were accessed instead of the target model
class itself.

RamezIssac/django-datatable-view,doganmeh/django-datatable-view,doganmeh/django-datatable-view,annabed/django-datatable-view,johnrtipton/django-datatable-view,annaproch/django-datatable-view,doganmeh/django-datatable-view,annabed/django-datatable-view,CloudNcodeInc/django-datatable-view,jangeador/django-datatable-view,addgene/django-datatable-view,annaproch/django-datatable-view,annaproch/django-datatable-view,RamezIssac/django-datatable-view,johnrtipton/django-datatable-view,CloudNcodeInc/django-datatable-view,greenbender/django-datatable-view,pivotal-energy-solutions/django-datatable-view,addgene/django-datatable-view,CloudNcodeInc/django-datatable-view,greenbender/django-datatable-view,pivotal-energy-solutions/django-datatable-view,jangeador/django-datatable-view,greenbender/django-datatable-view,annabed/django-datatable-view,RamezIssac/django-datatable-view,jangeador/django-datatable-view,pivotal-energy-solutions/django-datatable-view,addgene/django-datatable-view,johnrtipton/django-datatable-view