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_linkding_middleware.py

@@ -0,0 +1,47 @@
+from django.test import TestCase
+from django.urls import reverse
+
+from bookmarks.models import UserProfile, GlobalSettings
+from bookmarks.tests.helpers import BookmarkFactoryMixin
+from bookmarks.middlewares import standard_profile
+
+
+class LinkdingMiddlewareTestCase(TestCase, BookmarkFactoryMixin):
+    def test_unauthenticated_user_should_use_standard_profile_by_default(self):
+        response = self.client.get(reverse("login"))
+
+        self.assertEqual(standard_profile, response.wsgi_request.user_profile)
+
+    def test_unauthenticated_user_should_use_custom_configured_profile(self):
+        guest_user = self.setup_user()
+        guest_user_profile = guest_user.profile
+        guest_user_profile.theme = UserProfile.THEME_DARK
+        guest_user_profile.save()
+
+        global_settings = GlobalSettings.get()
+        global_settings.guest_profile_user = guest_user
+        global_settings.save()
+
+        response = self.client.get(reverse("login"))
+
+        self.assertEqual(guest_user_profile, response.wsgi_request.user_profile)
+
+    def test_authenticated_user_should_use_own_profile(self):
+        guest_user = self.setup_user()
+        guest_user_profile = guest_user.profile
+        guest_user_profile.theme = UserProfile.THEME_DARK
+        guest_user_profile.save()
+
+        global_settings = GlobalSettings.get()
+        global_settings.guest_profile_user = guest_user
+        global_settings.save()
+
+        user = self.get_or_create_test_user()
+        user_profile = user.profile
+        user_profile.theme = UserProfile.THEME_LIGHT
+        user_profile.save()
+        self.client.force_login(user)
+
+        response = self.client.get(reverse("login"), follow=True)
+
+        self.assertEqual(user_profile, response.wsgi_request.user_profile)