Add a new Search for Reserved Products on Sales App

 * Add a new search for Reserved Products on Sales App > Search > Reserved
   Products. This search show all reserved products that are removed from stock
   until the end of a sale.

   Fixes: http://bugs.async.com.br/show_bug.cgi?id=5619

Change-Id: I979c8a37c228968b77ba903889c6605a1ffeb378