[MERGE][IMP] survey: redesign frontend views

PURPOSE
=========

In 3 words, make survey beautiful.

SPECIFICATIONS
==============

- Center the question in Question per page mode
- When last question or page of the survey, Continue becomes Finish
- Add Press key capabilities to speed up the survey completion
    - ENTER : go to next question (or next page)
    - A to Z : to select answers in choice and matrix question type
      (only in question per page mode to avoid mismatch and complexity with multiple questions
- New layout for single / multiple choice
    - Custom radio buttons and checkboxes. Unified style for both except we keep circle icon for
      simple choice and square icon for multiple choice.
- Add a progress bar (2 modes : % and number)
- Add Background image
- Re-do quiz correction mode that were removed from controller during survey refactoring.
- Review breadcrumb style (make it more integrated to the new design)

See sub commits for more details.

LINKS
=====

Follow the survey refactoring done in #42908.
Task ID: '2150291'

closes odoo/odoo#43237

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>