Add Pull Request builds page to settings (#206)

* Add Pull Request builds page to settings

This is a basic form for now,
but we can spruce it up before it goes live.

* Apply suggestions from code review

Co-authored-by: Anthony <[email protected]>

* Rename file

* Oops, remove old file too.

* Apply suggestions from code review

Co-authored-by: Anthony <[email protected]>

* Fix indent

* Don't disable form since it breaks the link to integrations

---------

Co-authored-by: Anthony <[email protected]>

Author: ericholscher

readthedocsext/theme/templates/projects/edit_base.html

@@ -23,6 +23,9 @@
         <a class="item {% block project_domains_active %}{% endblock %}" href="{% url "projects_domains" project.slug %}">
           {% trans "Domains" %}
         </a>
+        <a class="item {% block project_pull_requests_active %}{% endblock %}" href="{% url "projects_pull_requests" project.slug %}">
+          {% trans "Pull request builds" %}
+        </a>
         {% if not USE_ORGANIZATIONS %}
           <a class="item {% block project_users_active %}{% endblock %}" href="{% url "projects_users" project.slug %}">
             {% trans "Maintainers" %}

readthedocsext/theme/templates/projects/pull_requests_form.html

@@ -0,0 +1,31 @@
+{% extends "projects/project_edit_base.html" %}
+
+{% load i18n %}
+{% load static %}
+{% load crispy_forms_filters %}
+
+{% block title %}{% trans "Pull request builds" %}{% endblock %}
+
+{% block project_pull_requests_active %}active{% endblock %}
+{% block project_edit_content_header %}{% trans "Pull request builds" %}{% endblock %}
+
+{% block project_edit_content %}
+  <p>
+    {% blocktrans trimmed %}
+      Enable builds for your pull requests and easily preview changes to your documentation.
+    {% endblocktrans %}
+  </p>
+
+  <form class="ui form" method="post" action=".">
+    {% csrf_token %}
+    {{ form | crispy }}
+
+    <input class="ui {% if form.errors and form.is_disabled %}disabled{% endif %} primary button" type="submit"
+           value="{% trans " Update" %}">
+  </form>
+{% endblock %}
+
+{% block project_edit_sidebar_help_topics %}
+  {% include "includes/elements/link.html" with url="https://docs.readthedocs.io/en/stable/pull-requests.html" text="Pull
+  request builds" is_external=True class="item" %}
+{% endblock project_edit_sidebar_help_topics %}