Send user back to login when command channel connection is lost (#53)

src/app/routes.tsx

@@ -1,6 +1,7 @@
 import * as React from 'react';
 import { Route, RouteComponentProps, Switch } from 'react-router-dom';
 import { Alert, PageSection } from '@patternfly/react-core';
+import { filter } from 'rxjs/operators';
 import { DynamicImport } from '@app/DynamicImport';
 import { accessibleRouteChangeHandler } from '@app/utils/utils';
 import { NotFound } from '@app/NotFound/NotFound';
@@ -92,6 +93,13 @@ const AppRoutes = () => {
     return () => sub.unsubscribe();
   }, []);
 
+  React.useEffect(() => {
+    const sub = context.commandChannel.isReady().pipe(filter(v => !v)).subscribe(() =>
+      setAuthenticated(false)
+    );
+    return () => sub.unsubscribe();
+  }, []);
+
   return (
     <LastLocationProvider>
       <Switch>