List owners on ACL management page

Issue #720
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/html/project.html

@@ -164,6 +164,23 @@
   </tr>
   </thead>
   <tbody>
+  {% for user in object.owners.all %}
+  <tr>
+  <td>{{ user.username }} <span class="badge">{% trans "Owner" %}</span></td>
+  <td>{{ user.first_name }}</td>
+  <td>{{ user.email }}</td>
+  <td>
+<form action="{% url "delete-user" project=object.slug %}" method="post">
+{% csrf_token %}
+<input type="hidden" name="name" value="{{ user.username }}" />
+<button type="submit" class="btn btn-danger btn-xs">
+<i class="fa fa-trash"></i>
+{% trans "Remove" %}
+</button>
+</form>
+  </td>
+  </tr>
+  {% endfor %}
   {% for user in object.all_users %}
   <tr>
   <td>{{ user.username }}</td>

weblate/trans/models/project.py

@@ -192,7 +192,9 @@ class Project(models.Model, PercentMixin, URLMixin, PathMixin):
         Returns all users having ACL on this project.
         """
         group = Group.objects.get(name=self.name)
-        return group.user_set.all()
+        return group.user_set.exclude(
+            id__in=self.owners.values_list('id', flat=True)
+        )
 
     def add_user(self, user):
         """