make sure that we interpret SSH certificate expiry as a UTC based time, not in the local timezone

src/app/authorisation.service.ts

@@ -228,7 +228,7 @@ public getKeys(id?: Identity) {
   for (let id of resp) {
     var validstr: String;
     validstr = id.Valid[0];
-    id.expiry = Date.parse(validstr.split(" ")[3])
+    id.expiry = Date.parse(validstr.split(" ")[3]+"Z")
     res.push(id);
   }
   return res