add event organizer merge tool

dnscms/events/templates/events/merge_organizers_confirm.html

@@ -0,0 +1,55 @@
+{% extends "wagtailadmin/generic/base.html" %}
+{% load i18n wagtailadmin_tags %}
+
+{% block main_content %}
+    <table class="listing">
+        <thead>
+            <tr>
+                <th>{% trans "Outcome" %}</th>
+                <th>{% trans "ID" %}</th>
+                <th>{% trans "Name" %}</th>
+                <th>{% trans "Slug" %}</th>
+                <th>{% trans "Association" %}</th>
+                <th>{% trans "External URL" %}</th>
+                <th>{% trans "Events" %}</th>
+            </tr>
+        </thead>
+        <tbody>
+            <tr>
+                <td><strong>{% trans "Survives" %}</strong></td>
+                <td>{{ survivor.pk }}</td>
+                <td>{{ survivor.name }}</td>
+                <td>{{ survivor.slug }}</td>
+                <td>{{ survivor.association|default:"—" }}</td>
+                <td>{{ survivor.external_url|default:"—" }}</td>
+                <td>{{ survivor_event_count }}</td>
+            </tr>
+            <tr>
+                <td><strong>{% trans "Is deleted" %}</strong></td>
+                <td>{{ loser.pk }}</td>
+                <td>{{ loser.name }}</td>
+                <td>{{ loser.slug }}</td>
+                <td>{{ loser.association|default:"—" }}</td>
+                <td>{{ loser.external_url|default:"—" }}</td>
+                <td>{{ loser_event_count }}</td>
+            </tr>
+        </tbody>
+    </table>
+
+    <p class="help-block help-warning">
+        {% blocktrans with loser_name=loser.name survivor_name=survivor.name trimmed %}
+            Events organized by “{{ loser_name }}” will be moved to “{{ survivor_name }}”,
+            and “{{ loser_name }}” will be deleted. This cannot be undone.
+        {% endblocktrans %}
+    </p>
+
+    <form method="post" novalidate>
+        {% csrf_token %}
+        <ul class="fields">
+            {% for field in form.visible_fields %}
+                <li>{% formattedfield field %}</li>
+            {% endfor %}
+        </ul>
+        <button type="submit" class="button serious">{% trans "Merge organizers" %}</button>
+    </form>
+{% endblock %}

dnscms/events/templates/events/merge_organizers_select.html

@@ -0,0 +1,30 @@
+{% extends "wagtailadmin/generic/base.html" %}
+{% load i18n wagtailadmin_tags %}
+
+{% block main_content %}
+    <p>
+        {% trans "Pick the two organizers to merge. The one with the lowest ID survives; the other one is deleted after its events have been moved over." %}
+    </p>
+    <form method="post" novalidate>
+        {% csrf_token %}
+        {% if form.non_field_errors %}
+            <div class="help-block help-critical">{{ form.non_field_errors }}</div>
+        {% endif %}
+        <ul class="fields">
+            {% for field in form.visible_fields %}
+                <li>{% formattedfield field %}</li>
+            {% endfor %}
+        </ul>
+        <button type="submit" class="button">{% trans "Continue" %}</button>
+    </form>
+{% endblock %}
+
+{% block extra_js %}
+    {{ block.super }}
+    {{ form.media.js }}
+{% endblock %}
+
+{% block extra_css %}
+    {{ block.super }}
+    {{ form.media.css }}
+{% endblock %}