Moved active status to a database entry apposed to a function

Added settings page
Cleaned up rollover page

busManager/coord/templates/admin/rollover_form.html

@@ -0,0 +1,16 @@
+{% extends "admin/base_site.html" %}
+
+{% block content %}
+    <h1>Yearly rollover</h1>
+    <p>Initiating a rollover will perform the following actions.</p>
+    <ul>
+        <li>Set any active Year 12 traveller without an exit date to the selected exit date.</li>
+        <li>Set any active traveller with an exit date before today to inactive</li>
+        <li>Increase the year level of everyone except for <b>Adult Learners</b> and <b>Year 12</b></li>
+    </ul>
+    <form action="" method="post">
+        {% csrf_token %}
+        {{ form.as_p }}
+    </form>
+    <input type="submit" style="padding: 15px 30px; font-size: 18px; background: var(--delete-button-bg);" value="Initiate!">
+{% endblock %}