Remove initial redirect when sidebar loads

Avoid redirecting to '/viewer' when the sidebar loads.

This redirect is unnecessary since the sidebar never changes its mode
once loaded and it caused the viewer embedded on a page to fail to load
when restoring a closed tab in Chrome.

This may also resolve issues where the user agent disallows the
'replaceState' call in certain situations (search prod-client reports on
Sentry for "replaceState")

Fixes #178

h/static/scripts/app.js

@@ -63,23 +63,19 @@ function configureRoutes($routeProvider) {
       reloadOnSearch: false,
       resolve: resolve,
     });
-  $routeProvider.when('/viewer',
+  $routeProvider.when('/stream',
     {
-      controller: 'WidgetController',
+      controller: 'StreamController',
       template: VIEWER_TEMPLATE,
       reloadOnSearch: false,
       resolve: resolve,
     });
-  $routeProvider.when('/stream',
-    {
-      controller: 'StreamController',
+  $routeProvider.otherwise({
+    controller: 'WidgetController',
     template: VIEWER_TEMPLATE,
     reloadOnSearch: false,
     resolve: resolve,
   });
-  return $routeProvider.otherwise({
-    redirectTo: '/viewer',
-  });
 }
 
 // @ngInject