Don't display buttons if there are no system notifications (#4280)

* Don't display buttons if there are no notices

* remove redundant gt check

templates/admin/notice.tmpl

@@ -34,6 +34,7 @@
 						</tr>
 					{{end}}
 				</tbody>
+				{{ if .Notices }}
 					<tfoot class="full-width">
 							<tr>
 								<th></th>
@@ -61,6 +62,7 @@
 								</th>
 							</tr>
 					</tfoot>
+				{{ end }}
 			</table>
 		</div>