Link to upgrade progress

webadmin/EN/upgrade.html

@@ -50,6 +50,9 @@
           text-decoration: none;
           color: black;
       }
+      a:link {
+          color: blue;
+      }
 
       button:hover, a:hover {
           opacity: 0.7;
@@ -64,7 +67,9 @@
       <h3>An upgrade is scheduled</h3>
       <h3>Systems may be temporarily unavailable in the next few minutes</h3>
 
-      <p>Upgrades happen automatically. You don't need to start them manually like this, except in rare circumstances.</p>
+      <p>Upgrades happen automatically. You don't need to start them manually like this, except in rare circumstances</p>
+
+      <p>You can see upgrade progress <a href="upgrade.txt">here</a></p>
 
       <br>