Pull in code from pool_elo

need to re-integrate yugioh code

src/templates/mod.rs

@@ -1,12 +1,10 @@
-pub mod global_state;
 pub mod index;
 pub mod inventory;
-pub mod preferences;
 
 #[cfg(client)]
 use perseus::utils::get_path_prefix_client;
 
-#[allow(dead_code)]
+#[cfg(client)]
 pub fn get_api_path(path: &str) -> String {
     #[cfg(engine)]
     {