Fixed bool in header

app/footer.php

 <table class="donate">
 <tr>
 	<td>
-		<?php var_dump(PUBLISHED); ?>
 		<a href="http://phpipam.net">phpIPAM IP address management <?php print '[v'. VERSION_VISIBLE. ']'; ?><?php if(PUBLISHED===false) { print " dbversion".DBVERSION; } ?></a>
 	</td>