Add automatic GitHub webhook creation

app/templates/base.html

@@ -111,7 +111,7 @@
 						<li class="alert alert-{{category}} container">
 							<span class="icon_message"></span>
 
-							{{ message|safe }}
+							{{ message }}
 
 							<div style="clear: both;"></div>
 						</li>

app/templates/github/setup_webhook.html

@@ -0,0 +1,23 @@
+{% extends "base.html" %}
+
+{% block title %}
+	{{ _("Setup GitHub webhook") }}
+{% endblock %}
+
+{% from "macros/forms.html" import render_field, render_submit_field, render_radio_field %}
+
+{% block content %}
+	<h1 class="mt-0">{{ self.title() }}</h1>
+
+	<div class="alert alert-info">
+		{{ _("You can delete the webhook at any time by going into Settings > Webhooks on the repository.") }}
+	</div>
+
+	<form method="POST" action="" enctype="multipart/form-data">
+		{{ form.hidden_tag() }}
+
+		{{ render_field(form.event) }}
+
+		{{ render_submit_field(form.submit) }}
+	</form>
+{% endblock %}

app/templates/packages/view.html

@@ -364,6 +364,15 @@
 				</ul>
 			</div>
 
+			{% if package.getIsOnGitHub() %}
+			<p class="small text-centered">
+				<a href="{{ url_for('github.setup_webhook', pid=package.id) }}">
+					Set up a webhook
+				</a>
+				to create releases automatically.
+			</p>
+			{% endif %}
+
 			<div class="card my-4">
 				<div class="card-header">
 					{% if package.approved and package.checkPerm(current_user, "CREATE_THREAD") %}