feat: allow sorting of categories in settings

feat: add filters to statistics page
feat: allow renaming / translation of payment methods
feat: allow deletion of the default payment methods

endpoints/categories/sort.php

@@ -0,0 +1,34 @@
+<?php
+
+require_once '../../includes/connect_endpoint.php';
+
+session_start();
+
+if (isset($_SESSION['loggedin']) && $_SESSION['loggedin'] === true) {
+    $categories = $_POST['categoryIds'];
+    $order = 2;
+
+    foreach ($categories as $categoryId) {
+        $sql = "UPDATE categories SET `order` = :order WHERE id = :categoryId";
+        $stmt = $db->prepare($sql);
+        $stmt->bindParam(':order', $order, SQLITE3_INTEGER);
+        $stmt->bindParam(':categoryId', $categoryId, SQLITE3_INTEGER);
+        $result = $stmt->execute();
+        $order++;
+    }
+
+    $response = [
+        "success" => true,
+        "message" => translate("sort_order_saved", $i18n)
+    ];
+    echo json_encode($response);    
+} else {
+    $response = [
+        "success" => false,
+        "errorMessage" => translate("session_expired", $i18n)
+    ];
+    echo json_encode($response);
+    die();
+}
+
+?>