Resolve "Button to create vouchers is missing"

Closes #28 (closed)

aleksis/apps/paweljong/templates/paweljong/voucher/list.html

@@ -18,6 +18,7 @@
       {% trans "Clear" %}
     </button>
   </form>
+  <a class="btn colour-primary waves-effect waves-light" href="{% url 'create_vouchers' %}">{% trans "Create voucher" %}</a>
 
   <h5>{% blocktrans %}Selected vouchers{% endblocktrans %}</h5>
     {% render_table vouchers_table %}