Purpose
=======
As an Interviewer, I want my questions to be as clear as possible. To this end
I would like to be able to detail a bit which kind of answers I expect.
Specifications
============
For all the question types that require an input, display a char field
"Placeholder" in the Answers tab with an helper that says:
"When set, this text will appear in the field to help participants answer."
Then on the survey, display the placeholder in the question input zone.
Task-2671388
closesodoo/odoo#78682
Related: odoo/upgrade#2998
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
David Beguin
d393f98a81