Adds email config admin view (#2494)

This view lets you see your email configuration and send a test email.

bookwyrm/templates/email/test/html_content.html

@@ -0,0 +1,12 @@
+{% extends 'email/html_layout.html' %}
+{% load i18n %}
+
+{% block content %}
+<p>
+{% blocktrans trimmed %}
+This is a test email.
+{% endblocktrans %}
+</p>
+
+
+{% endblock %}

bookwyrm/templates/email/test/subject.html

@@ -0,0 +1,4 @@
+{% load i18n %}
+{% blocktrans trimmed %}
+Test email
+{% endblocktrans %}

bookwyrm/templates/email/test/text_content.html

@@ -0,0 +1,9 @@
+{% extends 'email/text_layout.html' %}
+{% load i18n %}
+{% block content %}
+{% blocktrans trimmed %}
+This is a test email.
+{% endblocktrans %}
+
+
+{% endblock %}