Add back to issue listing link

resources/views/projects/issues/show.blade.php

@@ -29,6 +29,7 @@
             </table>
             <div class="panel-footer">
                 {{ link_to_route('projects.issues.edit', __('issue.edit'), [$project, $issue], ['id' => 'edit-issue-'.$issue->id, 'class' => 'btn btn-warning']) }}
+                {{ link_to_route('projects.issues.index', __('issue.back_to_index'), [$project], ['class' => 'btn btn-default pull-right']) }}
             </div>
         </div>
     </div>