Show only last 30 days on homepage

Fixes #47

games/templates/base.html

@@ -22,9 +22,7 @@
             <nav class="mb-4 bg-white dark:bg-gray-900 border-gray-200 rounded">
                 <div class="container flex flex-wrap items-center justify-between mx-auto">
                     <a href="{% url 'list_sessions_recent' %}" class="flex items-center">
-                        <span class="text-4xl">
-                            <img src="{% static 'icons/schedule.png' %}" width="48" class="mr-4" />
-                        </span>
+                        <span class="text-4xl">⌚</span>
                         <span class="self-center text-xl font-semibold whitespace-nowrap text-white">Timetracker</span>
                     </a>
                     <div class="w-full md:block md:w-auto">

games/templates/list_sessions.html

@@ -1,8 +1,7 @@
 {% extends 'base.html' %}
-{% load static %}
-{% block title %}
-    {{ title }}
-{% endblock title %}
+
+{% block title %}{{ title }}{% endblock title %}
+
 {% block content %}
     {% if dataset.count >= 1 %}
         <div class="mx-auto text-center my-4">