[Add,imp]:Remove expense 'sheet' concept

Task: https://www.odoo.com/web#id=9989&view_type=form&model=project.task&menu_id=3942&action=327
Pad: https://pad.odoo.com/p/r.bd4JuNZUZclDd9oL
There is no difference in view_hr_crete_expense_filter and view_expense_to_submit_filter except search view string, then why not creating one search view(with generic string), or if it is mandatory to put different string in both view then you can override fields_view_get