Implement edit-player. Optimizations.

templates/modals/add_clan.html

@@ -36,10 +36,7 @@
         if (addClanModal) {
             addClanModal.addEventListener('shown.bs.modal', event => {
                 const submitButton = addClanModal.querySelector('button[name="submit"]');
-                submitButton.addEventListener('click', function (e) {
-                    e.preventDefault();
-                    submitButton.onclick = function () {}
-
+                submitButton.addEventListener('click', function () {
                     const [clanList, otherClanList] = getClanLists(event);
 
                     const clanName = addClanModal.querySelector('#clanName');
@@ -89,7 +86,7 @@
                         .catch((error) => {
                             throw new Error(error)
                         });
-                })
+                }, { once: true });
             });
         }
     });