Bug Fix: Job Index Authorization Check

The LongRunningJobs claim is checked instead of the StaleJobs claim
which resulted in an NullReferenceException for users without StaleJobs
authorization.

Disco.Web/Views/Job/Index.cshtml

@@ -129,7 +129,7 @@
     <h2>My Jobs (@Model.MyJobs.Items.Count())</h2>
     @Html.Partial(MVC.Shared.Views._JobTable, Model.MyJobs, new ViewDataDictionary())
 }
-@if (Authorization.Has(Claims.Job.Lists.LongRunningJobs))
+@if (Authorization.Has(Claims.Job.Lists.StaleJobs))
 {
     <h2>Stale Jobs (@Model.StaleJobs.Items.Count())</h2>
     @Html.Partial(MVC.Shared.Views._JobTable, Model.StaleJobs, new ViewDataDictionary())