Replace links with django routes in templates

nummi/main/templates/main/index.html

@@ -1,7 +1,7 @@
 {% if transactions %}
 	<ul>
 		{% for trans in transactions %}
-		<li><a href="transaction/{{ trans.id }}">{{ trans }}</a></li>
+		<li><a href="{% url 'transaction' trans.id %}">{{ trans }}</a></li>
 		{% endfor %}
 	</ul>
 {% endif %}

nummi/main/templates/main/transaction.html

@@ -1,6 +1,6 @@
 <h1>{{ transaction }}</h1>
 <ul>
 	{% for inv in invoices %}
-	<li><a href="../invoice/{{ inv.id }}">{{ inv.name }}</a></li>
+	<li><a href="{% url 'invoice' inv.id %}">{{ inv.name }}</a></li>
 	{% endfor %}
 </ul>