Don't show "Complete Billing" in pending page if customer has an

ExternalCredit, which means he/she has a subscription.
Signed-off-by: Birin Sanchez <birin.sanchez@puri.sm>

limitmonitor/jinja2/limitmonitor/userlimit.html

@@ -31,11 +31,13 @@ SPDX-License-Identifier: AGPL-3.0
               <p>
                 Your registration is pending. If you completed the billing process, please wait two minutes before refreshing this page.
               </p>
+              {% if not haspaid %}
               <p>If you have <strong><i>not</i></strong> completed the billing process, <a href="{{complete_signup_url}}">please do so now.</a>
               </p>
               <p>
                 Pending registrations are removed after 24 hours.
               </p>
+              {% endif %}
             </div>
             {% else %}
             <p>{% trans "Service credit and profile management" %}</p>

limitmonitor/views.py

@@ -4,7 +4,7 @@ from django.http import FileResponse, HttpResponseRedirect
 from django.shortcuts import render
 from django.urls import reverse
 
-from .models import Limit
+from .models import Limit, ExternalCredit
 from invitation.models import Invitation
 from purist.models import AccountType
 from cart.views import CartRegistrationView
@@ -52,7 +52,9 @@ def userlimit(request):
         if not inv.expired() and not inv.consumed:
             invitations['links_not_used'] = True
         invitations['list'].append(inv_dict)
-
+    ec = ExternalCredit.objects.filter(
+        account_name=request.user.get_identity())
+    haspaid = len(ec) > 0
     render_data = {
         "DEBUG_CHANGE_PASSWORD": settings.DEBUG_CHANGE_PASSWORD,
         "username": username,
@@ -67,6 +69,7 @@ def userlimit(request):
         "invitations": invitations,
         "haschosenreward": hasattr(request.user, 'chosenreward'),
         "complete_signup_url": CartRegistrationView().get_success_url(request.user),
+        "haspaid": haspaid,
     }
 
     return render(request, 'limitmonitor/userlimit.html', render_data)