Add some internal navigation for platform admin

There are way too many links in the top nav now (when you’re using the
site as a platform admin).

And how often are you going to look at the letter jobs page really?

This commit adds some internal navigation for the platform admin area of
the platform, copying the style that works for navigating a single
service.

app/templates/views/providers/providers.html

@@ -1,4 +1,4 @@
-{% extends "withoutnav_template.html" %}
+{% extends "views/platform-admin/_base_template.html" %}
 {% from "components/table.html" import list_table, field, text_field, link_field, right_aligned_field_heading, hidden_field_heading %}
 {% from "components/show-more.html" import show_more %}
 
@@ -6,112 +6,107 @@
 Providers
 {% endblock %}
 
-{% block maincolumn_content %}
+{% block platform_admin_content %}
 
-<div class="grid-row">
-    <div class="column-two-thirds">
-        <h1 class="heading-large">Providers</h1>
+  <h1 class="heading-large">Providers</h1>
 
-        <h2 class="heading-medium">SMS</h2>
+  <h2 class="heading-medium">SMS</h2>
 
-        {% call(item, row_number) list_table(
-            domestic_sms_providers,
-            caption="Domestic SMS providers",
-            caption_visible=False,
-            empty_message='No domestic sms providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      domestic_sms_providers,
+      caption="Domestic SMS providers",
+      caption_visible=False,
+      empty_message='No domestic sms providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
+  {% endcall %}
 
-        <h2 class="heading-medium">Email</h2>
+  <h2 class="heading-medium">Email</h2>
 
-        {% call(item, row_number) list_table(
-            email_providers,
-            caption="Email providers",
-            caption_visible=False,
-            empty_message='No email providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      email_providers,
+      caption="Email providers",
+      caption_visible=False,
+      empty_message='No email providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
+  {% endcall %}
 
-        <h1 class="heading-large">International SMS Providers</h1>
+  <h1 class="heading-large">International SMS Providers</h1>
 
-        {% call(item, row_number) list_table(
-            intl_sms_providers,
-            caption="International SMS providers",
-            caption_visible=False,
-            empty_message='No international sms providers',
-            field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
-            field_headings_visible=True
-        ) %}
+  {% call(item, row_number) list_table(
+      intl_sms_providers,
+      caption="International SMS providers",
+      caption_visible=False,
+      empty_message='No international sms providers',
+      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings_visible=True
+  ) %}
 
-            {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
+      {{ link_field(item.display_name, url_for('main.view_provider', provider_id=item.id)) }}
 
-            {{ text_field(item.priority) }}
+      {{ text_field(item.priority) }}
 
-            {{ text_field(item.active) }}
+      {{ text_field(item.active) }}
 
-            {% if item.updated_at %}
-                {{ text_field(item.updated_at|format_datetime_short) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.updated_at %}
+          {{ text_field(item.updated_at|format_datetime_short) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {% if item.created_by %}
-                {{ text_field(item.created_by.name) }}
-            {% else %}
-                {{ text_field('None') }}
-            {% endif %}
+      {% if item.created_by %}
+          {{ text_field(item.created_by.name) }}
+      {% else %}
+          {{ text_field('None') }}
+      {% endif %}
 
-            {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
+      {{ link_field('change', url_for('main.edit_provider', provider_id=item.id)) }}
 
-        {% endcall %}
-
-    </div>
-</div>
+  {% endcall %}
 
 {% endblock %}