Only show/allow copying of rewrite rules if there are other gateways in group.

lib/admin/Controller/peering.pm

@@ -710,6 +710,11 @@ sub copy_rewrite : Local {
     my $grpid = $c->request->params->{grpid};
 	my $delete_old = $policy eq "delete" ? 1 : 0;
 
+	unless(defined $peerid && defined $rpeerid)
+	{
+    	$messages{cperr} = 'Client.Voip.NoSuchPeerHost';
+	}
+
     unless(keys %messages) {
         if($c->model('Provisioning')->call_prov( $c, 'voip', 'copy_peer_rewrites',
                                                  { from_peer_id => $rpeerid,

root/tt/peering_rewrite.tt

@@ -4,7 +4,8 @@
         </h2>
 
 		<a href="detail?group_id=[% peer.group_id %]" class="aaction">back</a>
-		
+
+		[% IF all_peers.size > 0 %]	
         [% UNLESS Catalyst.session.admin.read_only %]
 		<h3>Import Rewrite Rules from another host</h3>
         <div class="p1">
@@ -41,6 +42,7 @@
 			</table>
 		</div>
 		[% END %]
+		[% END %]
 
 
 		<h3 id="icaller">Inbound Rewrite Rules for Caller</h3>