Ensure that search doesn't make extra SQL lookups

Before this change, we were  accessing the `.kind` on the repository object, which caused peewee to make an extra lookup for each result

endpoints/api/search.py

@@ -3,6 +3,7 @@
 from endpoints.api import (ApiResource, parse_args, query_param, truthy_bool, nickname, resource,
                            require_scope, path_param, internal_only, Unauthorized, InvalidRequest,
                            show_if)
+from data.database import Repository
 from data import model
 from auth.permissions import (OrganizationMemberPermission, ReadRepositoryPermission,
                               UserAdminPermission, AdministerOrganizationPermission,
@@ -266,7 +267,7 @@ def conduct_robot_search(username, query, results):
 
 
 def repo_result_view(repo, username, last_modified=None, stars=None, popularity=None):
-  kind = 'application' if repo.kind.name == 'application' else 'repository'
+  kind = 'application' if Repository.kind.get_name(repo.kind_id) == 'application' else 'repository'
   view = {
     'kind': kind,
     'title': 'app' if kind == 'application' else 'repo',