website: get_base_url was not working with unprivileged users
Before this commit, when a unprivileged user tried to generate a report
(in sale for example), he could not access to the field website_id on ir.ui.view
An access error would be raised. This commit allows to read the base_url for all users.
Misc: UI for sale order templates
Before this commit, the sale order template information was not clear enough.
Note: these changes were merged into a single commit to ease the manual FW port of
changes in 15.3 for sale_subscription
taskid: 2942621
Arnaud Joset
ab191d6066