Allow edition in the new UI

This make everything slow as hell and prevent to quickly save.

Example: <h2 class="foo">bar</h2> => <h3 class="foo">bar</h3>

erp5_web_renderjs_ui: keep previous focus color

This reverts commit a87db49b.

Drop user informations from language page

See merge request nexedi/erp5!1457

we only want to set options to None when not using firefox, but we use firefox
by default. See dicussion on nexedi/erp5@17e1c262 (comment 136933)

See romain/erp5@f10cc273

This requires to rewrite all page content URLs on the fly, to respect the original document baseURI

This improve the HTTP cache usage when browsing multiple web sections.

Attribute must be quoted

also update tests to check if a duplicated supply will not cause doubled price.

See merge request nexedi/erp5!1445

See merge request nexedi/erp5!1447

See merge request nexedi/erp5!1437