Paginates invite page

I sure have sent out a lot of invites

bookwyrm/templates/settings/manage_invites.html

@@ -22,6 +22,7 @@
         </tr>
         {% endfor %}
     </table>
+    {% include 'snippets/pagination.html' with page=invites path=request.path %}
 </section>
 
 <section class="block">

bookwyrm/views/invite.py

@@ -1,5 +1,6 @@
 ''' invites when registration is closed '''
 from django.contrib.auth.decorators import login_required, permission_required
+from django.core.paginator import Paginator
 from django.http import HttpResponseBadRequest
 from django.shortcuts import get_object_or_404, redirect
 from django.template.response import TemplateResponse
@@ -7,6 +8,7 @@ from django.utils.decorators import method_decorator
 from django.views import View
 
 from bookwyrm import forms, models
+from bookwyrm.settings import PAGE_LENGTH
 
 
 # pylint: disable= no-self-use
@@ -18,10 +20,18 @@ class ManageInvites(View):
     ''' create invites '''
     def get(self, request):
         ''' invite management page '''
+        try:
+            page = int(request.GET.get('page', 1))
+        except ValueError:
+            page = 1
+
+        paginated = Paginator(models.SiteInvite.objects.filter(
+            user=request.user
+        ).order_by('-created_date'), PAGE_LENGTH)
+
         data = {
             'title': 'Invitations',
-            'invites': models.SiteInvite.objects.filter(
+            'invites': paginated.page(page),
-                user=request.user).order_by('-created_date'),
             'form': forms.CreateInviteForm(),
         }
         return TemplateResponse(request, 'settings/manage_invites.html', data)