luci-app-travelmate: sync with travelmate 1.2.1

luci-app-travelmate: sync with travelmate 1.2.1

* Runtime Information, Logview and Station Overview are now dynamically
updated via XHR poll
* New runtime information for "Faulty Stations" (Travelmate backend will
no longer rename faulty uplinks)
* Add a new "Restart" button to reset "Faulty Stations" information and
trigger a Travelmate restart
* In Stations overview the currently used uplink is emphasized in blue,
faulty uplinks in red
* Numerous cleanups (e.g. space=>tab indentation) and other small fixes

Signed-off-by: Dirk Brenken <redacted>