Upgrade Django major (#144)

* Bump dependency versions

* Configure default auto field implementation

* fix admin to use token proxy model

* update django docs link

bookmarks/admin.py

@@ -5,7 +5,7 @@ from django.contrib.auth.models import User
 from django.db.models import Count, QuerySet
 from django.utils.translation import ngettext, gettext
 from rest_framework.authtoken.admin import TokenAdmin
-from rest_framework.authtoken.models import Token
+from rest_framework.authtoken.models import TokenProxy
 
 from bookmarks.models import Bookmark, Tag, UserProfile
 from bookmarks.services.bookmarks import archive_bookmark, unarchive_bookmark
@@ -97,4 +97,4 @@ linkding_admin_site = LinkdingAdminSite()
 linkding_admin_site.register(Bookmark, AdminBookmark)
 linkding_admin_site.register(Tag, AdminTag)
 linkding_admin_site.register(User, AdminCustomUser)
-linkding_admin_site.register(Token, TokenAdmin)
+linkding_admin_site.register(TokenProxy, TokenAdmin)

bookmarks/templates/settings/api.html

@@ -17,7 +17,7 @@
             </div>
             <p><strong>Please treat this token as you would any other credential.</strong> Any party with access to this
                 token can access and manage all your bookmarks.</p>
-            <p>If you think that a token was compromised you can revoke (delete) it in the <a href="{% url 'admin:authtoken_token_changelist' %}">admin panel</a>. After deleting the token, a new one will be generated when you reload this settings page.</p>
+            <p>If you think that a token was compromised you can revoke (delete) it in the <a href="{% url 'admin:authtoken_tokenproxy_changelist' %}">admin panel</a>. After deleting the token, a new one will be generated when you reload this settings page.</p>
         </section>
 
     </div>