[FIX]sale: pager and view changer not visible when confirm the sale order

Steps to reproduce: BUG: #250
1. go to Sales->Quotations
2. open a quotation to form view either create a new one or duplicate the existing.
3. click on "Confirm Sale" button

Current behavior:
 pager and view switcher are missing.

Expected behavior:
 Should be able to see pager and view switcher.

This branch fixes this issue.