only explain how to select a channel if there are channels to select

Zotlabs/Module/Manage.php

@@ -170,7 +170,7 @@ class Manage extends \Zotlabs\Web\Controller {
 			'$header'           => t('Channel Manager'),
 			'$msg_selected'     => t('Current Channel'),
 			'$selected'         => local_channel(),
-			'$desc'             => t('Switch to one of your channels by selecting it.'),
+			'$desc'             => ((count($channels) > 1 || $delegates) ? t('Switch to one of your channels by selecting it.') : ''),
 			'$msg_default'      => t('Default Channel'),
 			'$msg_make_default' => t('Make Default'),
 			'$create'           => $create,

view/tpl/channels.tpl

@@ -9,9 +9,11 @@
 			{{$channel_usage_message}}
 		</div>
 		{{/if}}
+		{{if $desc}}
 		<div id="channels-desc" class="section-content-info-wrapper">
 			{{$desc}}
 		</div>
+		{{/if}}
 		{{foreach $all_channels as $chn}}
 			{{include file="channel.tpl" channel=$chn}}
 		{{/foreach}}