Add a help page that explains trial mode

> We start in trial mode and there are a bunch of things that we need to know, so
> let's explain this with a page, accessed from the footer. Not requiring log in.
> Should explain:
> 50 messages per day
> Can only send to yourself or team members
> How to go live
> We can then link to this from the dashboard (and any other place) where we
> tell you that you're in trial mode.

https://www.pivotaltracker.com/story/show/115775751

app/main/views/index.py

@@ -21,3 +21,8 @@ def verify_mobile():
 @main.route('/cookies')
 def cookies():
     return render_template('views/cookies.html')
+
+
+@main.route('/help')
+def help():
+    return render_template('views/help.html')

app/templates/admin_template.html

@@ -74,6 +74,7 @@
 
 {% block footer_support_links %}
   <nav class="footer-nav">
+    <a href="{{ url_for("main.help") }}">Help</a>
     <a href="https://docs.google.com/forms/d/1AL8U-xJX_HAFEiQiJszGQw0PcEaEUnYATSntEghNDGo/viewform">Support and feedback</a>
     <a href="{{ url_for("main.cookies") }}">Cookies</a>
     Built by the <a href="https://www.gov.uk/government/organisations/government-digital-service">Government Digital Service</a>

app/templates/views/help.html

@@ -0,0 +1,79 @@
+{% extends "withoutnav_template.html" %}
+
+{% block page_title %}
+  Cookies – GOV.UK Notify
+{% endblock %}
+
+{% block maincolumn_content %}
+
+<div class="grid-row">
+  <div class="column-two-thirds">
+    <h1 class="heading-xlarge">Help</h1>
+
+    <h2 class="heading-large">Trial mode</h2>
+
+    <p>
+      When you create a service on GOV.UK&nbsp;Notify, you start off in trial
+      mode. This means:
+    </p>
+    <ul class="list list-bullet">
+      <li>
+        you can only send messages to yourself and your team members
+      </li>
+      <li>
+        you can only send 50 messages per day
+      </li>
+    </ul>
+
+    <p>
+      Anyone working in central government can create an account on
+      GOV.UK&nbsp;Notify and try it out. So it’s important that you start off
+      with some restrictions in place.
+    </p>
+
+    <h3 class="heading-medium">To remove these restrictions</h3>
+
+    <p>
+      You need to request to go live:
+    </p>
+    <ul class="list list-bullet">
+      <li>
+        You’ll need to agree to our terms of use
+      </li>
+      <li>
+        If you plan to send more than 250,000 text messages per year, you’ll
+        need to agree to pay for what you use – take a look at our pricing
+      </li>
+      <li>
+        We’ll check your templates to make sure they’re consistent with our
+        design patterns, style guide and information security principles
+      </li>
+    </ul>
+
+    <h3 class="heading-medium">
+      All other aspects of GOV.UK&nbsp;Notify are exactly the same
+    </h2>
+
+    <p>
+      You can still:
+    </p>
+    <ul class="list list-bullet">
+      <li>
+        upload a batch of recipients
+      </li>
+      <li>
+        do an API integration
+      </li>
+    </ul>
+
+    <p>
+      We’ll send the messages you have permission to send. The messages you
+      don’t have permission to send will still be listed on your
+      GOV.UK&nbsp;Notify dashboard but won’t actually get sent. This means you
+      can check that everything is fully working without accidentally sending
+      hundreds of text messages or emails.
+    </p>
+  </div>
+</div>
+
+{% endblock %}