Got it to run, renamed some template stuff

Now onto the Jellyfin API, yay!

data/interfaces/default/info_children_list.html

@@ -28,7 +28,7 @@ DOCUMENTATION :: END
 
 % if data != None:
 <%
-    from plexpy.helpers import cast_to_int, page
+    from jellypy.helpers import cast_to_int, page
 %>
 % if data['children_count'] > 0:
 <div class="item-children-wrapper">