Add the namespaces box to the right hand side and make other small UI improvements to the repo list view

static/js/pages/repo-list.js

@@ -46,6 +46,10 @@
       }
     });
 
+    $scope.isOrganization = function(namespace) {
+      return !!UserService.getOrganization(namespace);
+    };
+
     // Star a repository or unstar a repository.
     $scope.toggleStar = function(repo) {
       if (repo.is_starred) {