add api

1. add repo history api.
1. add repo trash api.
1. udpate search file api, add 'content_highlight' to search result

tests/api/endpoints/test_repo_trash.py

@@ -0,0 +1,30 @@
+import os
+import json
+
+from django.core.urlresolvers import reverse
+
+from seaserv import seafile_api
+from seahub.test_utils import BaseTestCase
+
+class RepoTrashTest(BaseTestCase):
+
+    def setUp(self):
+        self.repo_id = self.repo.id
+        self.user_name = self.user.username
+        self.url = reverse('api-v2.1-repo-trash', args=[self.repo_id])
+
+    def tearDown(self):
+        self.remove_repo()
+        self.remove_group()
+
+    def test_can_get(self):
+        # delete a file first
+        file_name = os.path.basename(self.file)
+        seafile_api.del_file(self.repo_id, '/', file_name, self.user_name)
+
+        self.login_as(self.user)
+        resp = self.client.get(self.url)
+        self.assertEqual(200, resp.status_code)
+        json_resp = json.loads(resp.content)
+        assert json_resp['data'][0]['obj_name'] == file_name
+        assert json_resp['data'][0]['is_dir'] == False