*: website_event, test_website

This commit is a series of hacks. The goal is to move the summernote
text tools to the editor panel for the website editor. All the code
to use the text tools in a top bar is kept (mass mailing, etc) and the
text tools are placed at the right place for website in an ugly way.

This is obviously temporary, until we can implement those text tools
more generically and in a better way thanks to the new editor.

Part of https://github.com/odoo/odoo/pull/57975
task-2344227

closes odoo/odoo#57975

Related: odoo/design-themes#364
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

*: portal, website_sale, website_sale_wishlist

Portal-without-website header is now more basic, without the need of
a collapsed element. It is then entirely replaced when website is
installed with header templates, t-calling all the main parts.

Part of https://github.com/odoo/odoo/pull/56427
task-2264627

Co-authored-by: qsm-odoo <qsm@odoo.com>

Remove the default about us page because it could be easily recreated and
doesn't add a lot of value to the website.

task-2189613

As we now have a new debug mode 'tests' which load a new asset bundle
containing tour-test files, we moved those files to a new folder hierarchy.
That will clean the .js files trees.
Also, those files should be included in the new asset.

Basically, the .js tour files (not test) should be inside /static/src/js/tours
while .js tour test files (test=true) should be inside /static/tests/tours next
to QUnit tests, inside a tours folder.

+ test_new_api: don't run the test in debug assets

task-1934445
Comes with https://github.com/odoo/enterprise/pull/4281
Closes #33213