Create a separate page for service name changing for local services

This new page has a special hint text that will help local authorities
name their services well.

Add new hint text – old hint text left intact for now

app/templates/views/service-settings/name-local.html

@@ -0,0 +1,44 @@
+
+{% extends "withnav_template.html" %}
+{% from "components/textbox.html" import textbox %}
+{% from "components/page-header.html" import page_header %}
+{% from "components/page-footer.html" import page_footer %}
+{% from "components/form.html" import form_wrapper %}
+
+{% block service_page_title %}
+  Change your service name
+{% endblock %}
+
+{% block maincolumn_content %}
+
+  {{ page_header(
+    'Change your service name',
+    back_link=url_for('main.service_settings', service_id=current_service.id)
+  ) }}
+
+  <p class="govuk-body">Your service name should tell users what the message is about as well as who it’s from. For example:</p>
+    <ul class="list-bullet">
+        <li>School admissions - Brighton & Hove City Council</li>
+        <li>Electoral services - London Borough of Bromley</li>
+        <li>Blue Badge - Redcar & Cleveland Borough Council</li>
+    </ul>
+  <p class="govuk-body">You should only use an acronym if your users are already familiar with it.</p>
+
+  <div class="form-group">
+    {% if current_service.prefix_sms %}
+      <p class="govuk-body">Users will see your service name:</p>
+      <ul class="list-bullet">
+        <li>at the start of every text message</li>
+        <li>as your email sender name</li>
+      </ul>
+    {% else %}
+      <p class="govuk-body">Users will see your service name as your email sender name.</p>
+    {% endif %}
+  </div>
+
+  {% call form_wrapper() %}
+    {{ textbox(form.name) }}
+    {{ page_footer('Save') }}
+  {% endcall %}
+
+{% endblock %}