Fix broken maintenance mode
Maintenance mode has been broken since r7fe19ebfe0d3 (Thu Jun 4)
"Display caught errors on the page itself", fix it by passing the
site entity, rather than the site module to isActivePeriod.
<html>
<head><title>Seed DB links</title></head>
<body>
<p>
<a href="../../seed_db">Seed DB</a> <br />
<a href="../../clear_db">Clear DB</a> <br />
<a href="../../reseed_db">Reseed DB</a> <br />
</p>
<p>
<a href="../../seed_many?start=0&step=15&seed_type=user&end=15&goal=200">
200 Users</a> <br />
</p>
<p>
<a href="../../seed_many?start=0&step=15&seed_type=org&end=15&goal=200">
200 Organizations</a> <br />
<a href="../../seed_many?start=0&step=15&seed_type=org_app&end=15&goal=200">
200 Organizations Pre-Accepted Applications</a> <br />
<a href="../../seed_many?start=200&step=15&seed_type=org_app&end=215&goal=400&status=pre-rejected">
200 Organizations Pre-Rejected Applications</a> <br />
</p>
<p>
<a href="../../seed_many?start=0&step=15&seed_type=mentor&end=15&goal=200">
200 Mentors</a> <br />
</p>
<p>
<a href="../../seed_many?start=0&step=15&seed_type=student&end=15&goal=200">
200 Students</a> <br />
</p>
<p>
<a href="../../seed_many?start=0&step=5&seed_type=student_proposal&end=5&goal=25">
25*rand Student Proposals</a> <br />
</p>
</body>
</html>