Move rigboard templates up a level

Also:
- Find and replace panel -> card
- Some base template work
- gulpfile things, added dep on django-gulp

RIGS/templates/eventauthorisation_request_error.html

@@ -0,0 +1,15 @@
+{% extends request.is_ajax|yesno:'base_ajax.html,base_rigs.html' %}
+{% load widget_tweaks %}
+
+{% block title %}NottinghamTEC Email Address Required{% endblock %}
+
+{% block content %}
+    <div class="row">
+        <div class="col-sm-12">
+            <div class="alert alert-warning">
+                <h1>An error occured.</h1>
+                <p>Your RIGS account must have an @nottinghamtec.co.uk email address before you can send emails to clients.</p>
+            </div>
+        </div>
+    </div>
+{% endblock %}