add edit action to id_column if show action not available

  modified:   lib/active_admin/views/index_as_table.rb

Author: illogikal

lib/active_admin/views/index_as_table.rb

@@ -270,6 +270,8 @@ def id_column
           column(resource_class.human_attribute_name(resource_class.primary_key), sortable: resource_class.primary_key) do |resource|
             if controller.action_methods.include?('show')
               link_to resource.id, resource_path(resource), class: "resource_id_link"
+            elsif controller.action_methods.include?('edit')
+              link_to resource.id, edit_resource_path(resource), class: "resource_id_link"
             else
               resource.id
             end