[FIX] Fix for Issue 2716: Hide 'Print' button for the report 'Timesheet Profit'

The report 'Profit Timesheet' shouldn't be directly displayed in the views related to the model 'account.analytic.line' but only from the reporting menu. In facts the report requires a popup to specify the report parameters.

Fixes #2716
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-win32