Extract invoice_condition_template from https://github.com/OCA/sale-workflow/pull/50
Convert invoice_condition_template to the new API
Add a menu in Invoicing > Configuration for the conditions
The model has been renamed
Added accesses for the account users and managers on conditions
Add translations
Add the conditions fields on the invoice report.
Merge pull request #14 from guewen/add-invoice_condition_template

Add invoice condition template