Decompose i18n labels for Unifi widget

- Needed to decompose i18n labels for Unifi widget in order for field visibility setting to work correctly
- Fixed weird edge case where a call to cached-fetch would fail if no duration was passed
- Have VS Code hide the .next and node_modules folders from tree view

public/locales/en/common.json

@@ -36,8 +36,8 @@
         "uptime": "System Uptime",
         "days": "Days",
         "wan": "WAN",
-        "lan": "LAN",
-        "wlan": "WLAN",
+        "lan_users": "LAN Users",
+        "wlan_users": "WLAN Users",
         "up": "UP",
         "down": "DOWN",
         "wait": "Please wait"