fix bug desc/copyright/privacy_policy none (#796)

api/controllers/console/admin.py

 
         app = App.query.filter(App.id == args['app_id']).first()
         if not app:
-            raise NotFound('App not found')
+            raise NotFound(f'App \'{args["app_id"]}\' is not found')
 
         site = app.site
         if not site:
             copy_right = args['copyright'] if args['copyright'] else ''
             privacy_policy = args['privacy_policy'] if args['privacy_policy'] else ''
         else:
-            desc = site.description if (site.description if not args['desc'] else args['desc']) else ''
-            copy_right = site.copyright if (site.copyright if not args['copyright'] else args['copyright']) else ''
-            privacy_policy = site.privacy_policy \
-                if (site.privacy_policy if not args['privacy_policy'] else args['privacy_policy']) else ''
+            desc = site.description if site.description else \
+                args['desc'] if args['desc'] else ''
+            copy_right = site.copyright if site.copyright else \
+                args['copyright'] if args['copyright'] else ''
+            privacy_policy = site.privacy_policy if site.privacy_policy else \
+                args['privacy_policy'] if args['privacy_policy']  else ''
 
         recommended_app = RecommendedApp.query.filter(RecommendedApp.app_id == args['app_id']).first()