Unified SignalR disconnected/error dialogs

Dialogs (with a refresh option) appear whenever the SignalR client
disconnects or encounters an error. Nonsensical error messages replaced.
Page refresh technique changed to allow for urls containing fragment
hashes.

Disco.Web/Areas/Config/Views/DocumentTemplate/ImportStatus.cshtml

@@ -38,7 +38,7 @@
                             <a target="_blank" href="#" data-bind="attr: { href: manuallyAssignUrl }, visible: $parent.sessionEnded">Manually Assign Page</a>
                         </div>
                         <div data-bind="visible: detected">
-                            Document: <a target="_blank"  href="#" data-bind="text: documentTemplate, attr: { href: documentTemplateUrl }"></a>
+                            Document: <a target="_blank" href="#" data-bind="text: documentTemplate, attr: { href: documentTemplateUrl }"></a>
                             <br />
                             Target: <a target="_blank" href="#" data-bind="text: assignedData, attr: { href: assignedDataUrl }"></a>
                         </div>
@@ -307,15 +307,35 @@
             logHub.client.receiveLog = parseLog
 
             $.connection.hub.qs = { LogModules: '@(Disco.BI.DocumentTemplateBI.DocumentsLog.Current.LiveLogGroupName)' };
-            $.connection.hub.error(function (error) {
-                alert('Live-Log Error: ' + error);
-            });
+            $.connection.hub.error(onHubFailed);
 
             $.connection.hub.start()
                 .done(function () { isLive = true; })
-                .fail(function (error) {
-                    alert('Live-Log Connection Error: ' + error);
-                });
+                .fail(onHubFailed);
+
+            function onHubFailed(error) {
+                // Show Dialog Message
+                if ($('.disconnected-dialog').length == 0) {
+                    $('<div>')
+                        .addClass('dialog disconnected-dialog')
+                        .html('<h3><span class="fa-stack fa-lg"><i class="fa fa-wifi fa-stack-1x"></i><i class="fa fa-ban fa-stack-2x error"></i></span>Disconnected from the Disco ICT Server</h3><div>This page is not receiving live updates. Please ensure you are connected to the server, then refresh this page to enable features.</div>')
+                        .dialog({
+                            resizable: false,
+                            title: 'Disconnected',
+                            width: 400,
+                            modal: true,
+                            buttons: {
+                                'Refresh Now': function () {
+                                    $(this).dialog('option', 'buttons', null);
+                                    window.location.reload(true);
+                                },
+                                'Close': function () {
+                                    $(this).dialog('destroy');
+                                }
+                            }
+                        });
+                }
+            }
         }
         init();
     });