Added upgrade notice to avoid timeouts

core/templates/update.admin.php

@@ -21,6 +21,10 @@
 			<?php p($l->t('Please make sure that the database, the config folder and the data folder have been backed up before proceeding.')) ?>
 		</div>
 		<input class="updateButton" type="button" value="<?php p($l->t('Start update')) ?>">
+		<div class="infogroup">
+			<?php p($l->t('To avoid timeouts with larger installations, you can instead run the following command from your installation directory:')) ?>
+			<pre>./occ upgrade</pre>
+		</div>
 	</div>
 
 	<div class="updateProgress hidden"></div>