Fixed deprecated IPackageController reference for before_view to before_dataset_view

ckanext/odsh/plugin.py

@@ -267,7 +267,7 @@ class OdshPlugin(plugins.SingletonPlugin, DefaultTranslation, DefaultDatasetForm
 
         return pkg_dict
 
-    def before_view(self, pkg_dict):
+    def before_dataset_view(self, pkg_dict):
         '''
         adds the following key-value-pairs to pkg_dict:
         # key: 'is_new', value: True if the dataset has been created within the last month