Closes Issue:

Show train length (OwlBoard/backend#9)

index.html

@@ -60,9 +60,7 @@
       <div id="quick_links">
       </div>
       <div class="text-description">
-        <p>A cache error means that some users are seeing a faulty layout on departure board pages,
-           an update to fix this has been made available but it may take a few days for this fix to 
-           be downloaded to your device.
+        <p>A fault with our bandwidth provider is causing intermittent connectivity.  Apologies for any inconvenience.</p>
         </p>
         <p>Customise your quick links on the <a href="/settings.html">Settings</a> page.</p>
       </div>

js/simple-board.js

@@ -141,6 +141,9 @@ async function displayService(svc) {
     // Display Operator
     if (svc.operator) {
         var opRow = `<p class="msg op">A ${svc.operator} service</p>`
+        if (svc.length) {
+            opRow += `, with ${svc.length} carriages`;
+        }
         table.insertAdjacentHTML("beforeend", opRow);
     }
     // Parse cancelReason & delayReason