Add create page template with language hints

We've added some styling to wagtamiladmin/pages/edit:

- monospace fonts for markdown
- flag icons for languag fields
- language dependend background for stream files (sidebar and content)

Add the same to wagtamiladmin/pages/create.

mpicms/templates/wagtailadmin/pages/create.html

@@ -0,0 +1,36 @@
+{% extends "wagtailadmin/pages/create.html" %}
+{% load static %}
+{% block extra_css %}
+{{ block.super }}
+<style>
+.fieldname-markdown textarea {
+	font-family: monospace;
+}
+
+li.object.stream-field.english {
+	background-image: url("{% static "images/en.png" %}");
+	background-repeat: no-repeat
+}
+li.object.stream-field.german {
+	background: #cfe2e2;
+	background-image: url("{% static "images/de.png" %}");
+	background-repeat: no-repeat
+}
+</style>
+{% endblock %}
+
+{% block extra_js %}
+{{ block.super }}
+<script type="text/javascript">
+$(document).ready(function() {
+	$("div#body_de-list, div#sidebar_de-list").
+		closest("li.object.stream-field").
+		addClass("german");
+	$("div#body_en-list, div#sidebar_en-list").
+		closest("li.object.stream-field").
+		addClass("english");
+	$("label:contains('[de]')").append(" 🇩🇪");
+	$("label:contains('[en]')").append(" 🇬🇧");
+});
+</script>
+{% endblock %}