Reorganize the whole javascript part as seperate files, for better maintainabillity

pkg/web/static/js/api.js

@@ -0,0 +1,19 @@
+// API helper functions for Fail2ban UI
+
+// Add server parameter to URL
+function withServerParam(url) {
+  if (!currentServerId) {
+    return url;
+  }
+  return url + (url.indexOf('?') === -1 ? '?' : '&') + 'serverId=' + encodeURIComponent(currentServerId);
+}
+
+// Get server headers for API requests
+function serverHeaders(headers) {
+  headers = headers || {};
+  if (currentServerId) {
+    headers['X-F2B-Server'] = currentServerId;
+  }
+  return headers;
+}
+