Update error templates and move admins list to separate snippet

aleksis/core/templates/403.html

@@ -7,7 +7,7 @@
     <div class="card red">
       <div class="card white-text">
         <i class="material-icons small">error_outline</i>
-        <span class="card-title">{% blocktrans %}Error (403): You are not allowed to access the requested page or
+        <span class="card-title">{% trans "Error" %} (403): {% blocktrans %}You are not allowed to access the requested page or
           object.{% endblocktrans %}</span>
         <p>
           {% blocktrans %}
@@ -15,14 +15,7 @@
             administrators:
           {% endblocktrans %}
         </p>
-        <ul>
-          {% for admin in ADMINS %}
-            <li>
-              {{ admin.0 }}
-              &lt;<a class="blue-text text-lighten-2" href="mailto:{{ admin.1 }}">{{ admin.1 }}</a>&gt;
-            </li>
-          {% endfor %}
-        </ul>
+        {% include "core/admins_list.html" %}
       </div>
     </div>
   </div>

aleksis/core/templates/404.html

@@ -7,7 +7,7 @@
     <div class="card red">
       <div class="card-content white-text">
         <i class="material-icons small left">error_outline</i>
-        <span class="card-title">{% blocktrans %}Error (404): The requested page or object was not
+        <span class="card-title">{% trans "Error" %} (404): {% blocktrans %}The requested page or object was not
           found.{% endblocktrans %}</span>
         <p>
           {% blocktrans %}
@@ -19,14 +19,7 @@
             administrators:
           {% endblocktrans %}
         </p>
-        <ul>
-          {% for admin in ADMINS %}
-            <li>
-              {{ admin.0 }}
-              &lt;<a class="blue-text text-lighten-2" href="mailto:{{ admin.1 }}">{{ admin.1 }}</a>&gt;
-            </li>
-          {% endfor %}
-        </ul>
+        {% include "core/admins_list.html" %}
       </div>
     </div>
   </div>

aleksis/core/templates/500.html

@@ -7,14 +7,15 @@
     <div class="card red">
       <div class="card-content white-text">
         <div class="material-icons small">error_outline</div>
-        <span class="card-title">{% blocktrans %}Error (500): An unexpected error has
-          occured..{% endblocktrans %}</span>
+        <span class="card-title">{% trans "Error" %} (500): {% blocktrans %}An unexpected error has
+          occured.{% endblocktrans %}</span>
         <p>
           {% blocktrans %}
             Your site administrators will automatically be notified about this
-            error.
+            error. You can also contact them directly:
           {% endblocktrans %}
         </p>
+        {% include "core/admins_list.html" %}
       </div>
     </div>
   </div>

aleksis/core/templates/503.html

@@ -11,17 +11,10 @@
           later.{% endblocktrans %}</span>
         <p>
           {% blocktrans %}
-            This page is currently unavailable. If this error stays, contact your site administrators:
+            This page is currently unavailable. If this error persists, contact your site administrators:
           {% endblocktrans %}
         </p>
-        <ul>
-          {% for admin in ADMINS %}
-            <li>
-              {{ admin.0 }}
-              &lt;<a class="blue-text text-lighten-2" href="mailto:{{ admin.1 }}">{{ admin.1 }}</a>&gt;
-            </li>
-          {% endfor %}
-        </ul>
+        {% include "core/admins_list.html" %}
       </div>
     </div>
   </div>

aleksis/core/templates/core/admins_list.html

+<ul>
+  {% for admin in ADMINS %}
+    <li>
+      {{ admin.0 }}
+      &lt;<a class="blue-text text-lighten-2" href="mailto:{{ admin.1 }}">{{ admin.1 }}</a>&gt;
+    </li>
+  {% endfor %}
+</ul>

aleksis/core/templates/offline.html

@@ -12,13 +12,6 @@
       or mobile data is turned on and try again. If you think you are connected, please contact the system
       administrators:
     {% endblocktrans %}
-  <ul>
-    {% for admin in ADMINS %}
-      <li>
-        {{ admin.0 }}
-        &lt;<a href="mailto:{{ admin.1 }}">{{ admin.1 }}</a>&gt;
-      </li>
-    {% endfor %}
-  </ul>
   </p>
+  {% include "core/admins_list.html" %}
 {% endblock %}