Speed up navigation (#824)

* use client-side navigation

* update tests

* add setting for enabling link prefetching

* do not prefetch bookmark details

* theme progress bar

* cleanup behaviors

* update test

bookmarks/tests/test_bookmark_shared_view_performance.py

@@ -1,10 +1,10 @@
-from django.contrib.auth.models import User
+from django.db import connections
+from django.db.utils import DEFAULT_DB_ALIAS
 from django.test import TransactionTestCase
 from django.test.utils import CaptureQueriesContext
 from django.urls import reverse
-from django.db import connections
-from django.db.utils import DEFAULT_DB_ALIAS
 
+from bookmarks.models import GlobalSettings
 from bookmarks.tests.helpers import BookmarkFactoryMixin
 
 
@@ -18,9 +18,12 @@ class BookmarkSharedViewPerformanceTestCase(TransactionTestCase, BookmarkFactory
         return connections[DEFAULT_DB_ALIAS]
 
     def test_should_not_increase_number_of_queries_per_bookmark(self):
+        # create global settings
+        GlobalSettings.get()
+
         # create initial users and bookmarks
         num_initial_bookmarks = 10
-        for index in range(num_initial_bookmarks):
+        for _ in range(num_initial_bookmarks):
             user = self.setup_user(enable_sharing=True)
             self.setup_bookmark(user=user, shared=True)
 
@@ -36,7 +39,7 @@ class BookmarkSharedViewPerformanceTestCase(TransactionTestCase, BookmarkFactory
 
         # add more users and bookmarks
         num_additional_bookmarks = 10
-        for index in range(num_additional_bookmarks):
+        for _ in range(num_additional_bookmarks):
             user = self.setup_user(enable_sharing=True)
             self.setup_bookmark(user=user, shared=True)