rename /user/ to /agent/ and update links to use agent/ instead

agent/js/file_delete_modal.js

@@ -0,0 +1,5 @@
+function populateFileDeleteModal(file_id, file_name) {
+    // Dynamically populate the file delete modal with the file id (hidden) and name
+    document.getElementById("file_delete_id").value = file_id;
+    document.getElementById("file_delete_name").innerText = file_name;
+}