Will-fix: #10533

Will be part of the "Installation Assistant" (not written yet).

It will have the new instructions for full upgrade in a bit.
So let's do that now.

It will have CSS and JS once we release the ISO verification extension.
So let's do that now.

Conflicts:
	wiki/src/install/mac/clone.mdwn

The extre 'install.*' is really needed to not scrub translated pages.

The previous version was disabling htmlscrubber on all pages except an
nonexistent page (as PageSpace doesn't treat '/').

Despite popular believes "install/*" is enough to specify install and
any level of pages below it. See http://ikiwiki.info/ikiwiki/pagespec/.

PageSpec behave weirdly with page names with numerous '.', translatable
pages ($page.*) are fine but not translatable inlines ($page.inline.*).

We're merging the current state of web/assistant in order to test some
parts of it live, especially the new download page.

We can add it back once we get there.

Conflicts:
	wiki/src/download.inline.mdwn

We will have to revert it for production.

According to http://blog.axe-net.fr/noindex-nofollow-robots-txt-attention-erreurs/ we need noindex on each page. Robot.txt does not prevent google to link.
We probably will have to put this directive on each page.