Update sidebar.php

Getting rid of: 
Notice: Use of undefined constant title - assumed 'title' in wp-content\themes\looplet-theme\sidebar.php on line 31
Notice: Use of undefined constant ASC - assumed 'ASC' in wp-content\themes\looplet-theme\sidebar.php on line 31
Merge pull request #2 from kalligator/master

Update sidebar.php