Tweak templates and save invitation status change

src/registrar/admin.py

@@ -51,7 +51,9 @@ class MyHostAdmin(AuditedAdmin):
 
 
 admin.site.register(models.User, MyUserAdmin)
+admin.site.register(models.UserDomainRole, AuditedAdmin)
 admin.site.register(models.Contact, AuditedAdmin)
+admin.site.register(models.DomainInvitation, AuditedAdmin)
 admin.site.register(models.DomainApplication, AuditedAdmin)
 admin.site.register(models.Domain, AuditedAdmin)
 admin.site.register(models.Host, MyHostAdmin)

src/registrar/fixtures.py

@@ -39,6 +39,10 @@ class UserFixture:
             "first_name": "Logan",
             "last_name": "",
         },
+        {
+            "username": "2ffe71b0-cea4-4097-8fb6-7a35b901dd70",
+            "first_name": "Neil",
+            "last_name": "Martinsen-Burrell",
     ]
 
     @classmethod

src/registrar/models/user.py

@@ -44,3 +44,4 @@ class User(AbstractUser):
             email=self.email, status=DomainInvitation.SENT
         ):
             invitation.retrieve()
+            invitation.save()

src/registrar/templates/domain_add_user.html

@@ -4,13 +4,6 @@
 {% block title %}Add another user{% endblock %}
 
 {% block domain_content %}
-  <p><a href="{% url "domain-users" pk=domain.id %}">
-       <svg class="usa-icon" aria-hidden="true" focusable="false" role="img">
-        <use xlink:href="{% static 'img/sprite.svg' %}#arrow_back"></use>
-      </svg>
-      Back to user management
-    </a>
-  </p>
   <h1>Add another user</h1>
 
   <p>You can add another user to help manage your domain. They will need to sign

src/registrar/templates/emails/domain_invitation.txt

@@ -1,5 +1,5 @@
-You have been invited to manage a domain on get.gov, the registrar for
+You have been invited to manage the domain {{ domain.name }} on get.gov, 
-.gov domain names.
+the registrar for .gov domain names.
 
 To accept your invitation, go to <{{ domain_url }}>.