Create base forms for registration and sign in

Created routes and forms for registration, sign in, and registration
from an invite.
Also tidied up assets folder, removed copy of fronted toolkit.

app/templates/dashboard.html

@@ -0,0 +1,17 @@
+{% extends "admin_template.html" %}
+
+{% block page_title %}
+Hello world!
+{% endblock %}
+
+{% block content %}
+
+<div class="grid-row">
+	<div class="column-two-thirds">
+		<h1 class="heading-xlarge">Dashboard</h1>
+
+		<p>Insert dashboard here.</p>
+	</div>
+</div>
+
+{% endblock %}