Added learn to menu nav

Author: singerng

core/templates/base.html

@@ -62,6 +62,7 @@
                         <ul class="nav navbar-nav navbar-left">
                             <li><a href="{% url 'about' %}">About</a></li>
                             <li><a href="{% url 'sponsors' %}">Sponsors</a></li>
+                            <li><a href="{% url 'learn:index' %}">Learn</a></li>
                             {% contest_started as started %}
                             {% if started %}<li><a href="{% url 'problems' %}">Problems</a></li>{% endif %}
                             <li><a href="{% url 'updates' %}">Updates</a></li>

learn/static/css/learn.css

@@ -31,5 +31,6 @@ figure {
 }
 
 figure > figcaption.figure-caption {
+    padding-top: .5em;
     font-style: italic;
 }

learn/urls.py

@@ -4,5 +4,6 @@
 
 app_name = 'learn'
 urlpatterns = [
-    url(r'^module/([0-9a-zA-Z_]+)/', views.module, name='module')
+    url(r'^$', views.index, name='index'),
+    url(r'^module/([0-9a-zA-Z_]+)/$', views.module, name='module')
 ]

learn/views.py

@@ -1,8 +1,12 @@
-from django.shortcuts import render, get_object_or_404
+from django.shortcuts import render, get_object_or_404, redirect
 from django.template import Template, Context
 
 from .models import Module
 
+def index(request):
+    root = Module.objects.get(prereqs=None)
+
+    return redirect('learn:module', root.name)
 
 def module(request, module_name):
     module = get_object_or_404(Module.objects, name=module_name)