cockpit: Promote for advanced storage/firewalld/networking ops

- Talk about cockpit in networking, firewall and storage apps for advanced
operations. Make it a separate section instead of just description update to
provider higher emphasis.

- Update cockpit description too.

Closes: #1809.

Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>

plinth/modules/cockpit/__init__.py

@@ -34,6 +34,11 @@ _description = [
           'are available for many advanced functions that are not usually '
           'required. A web based terminal for console operations is also '
           'available.'), box_name=_(cfg.box_name)),
+    format_lazy(
+        _('Cockpit can be used to perform advanced storage operations such as '
+          'disk partitioning and RAID management. It can also be used for '
+          'opening custom firewall ports and advanced networking such as '
+          'bonding, bridging and VLAN management.')),
     format_lazy(
         _('It can be accessed by <a href="{users_url}">any user</a> on '
           '{box_name} belonging to the admin group.'),

plinth/modules/firewall/templates/firewall.html

@@ -93,6 +93,13 @@
       </em>
     </p>
 
+    <h3>{%trans "Advanced" %} </h3>
+    <p>
+      {% blocktrans trimmed %}
+        Advanced firwall operations such as opening custom ports are provided by
+        the <a href="/_cockpit/network/firewall">Cockpit</a> app.
+      {% endblocktrans %}
+    </p>
   {% endif %}
 
 {% endblock %}

plinth/modules/networks/templates/networks_configuration.html

@@ -45,4 +45,13 @@
   {% include "network_topology_main.html" %}
 
   {% include "internet_connectivity_main.html" %}
+
+  <h3>{%trans "Advanced" %} </h3>
+  <p>
+    {% blocktrans trimmed %}
+      Advanced networking operations such as bonding, bridging and VLAN
+      management are provided by the <a href="/_cockpit/network">Cockpit</a>
+      app.
+    {% endblocktrans %}
+  </p>
 {% endblock %}

plinth/modules/storage/templates/storage.html

@@ -88,4 +88,12 @@
     </p>
   {% endif %}
 
+  <h3>{%trans "Advanced" %} </h3>
+  <p>
+    {% blocktrans trimmed %}
+      Advanced storage operations such as disk partitioning and RAID management
+      are provided by the <a href="/_cockpit/storage">Cockpit</a> app.
+    {% endblocktrans %}
+  </p>
+
 {% endblock %}