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.

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

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

This reverts by hand the results of web/9279-translatable-iso-size

- This made our download button to fragile to website updates.
- MB is correct in the only case where this was useful (French).

We need to have the numbers stored in a file of its own, to not break
all translations when numbers updated.

We need to have the units stored in a file of its own, to not break all
translations if ever we switch from MB to GB.

It was apparently forgotten when it was added to ikiwiki.setup.

... and adjust ikiwiki*.setup + release process documentation accordingly.

One problem is that add_underlays needs absolute paths, so anyone working on
these bits will need to locally adjust it... and avoid committing that change.

Closes: todo/locking_down_this_website

It is currently only linked from [[about]].

It's been spammed a few times recently :(

Add RewriteRule's for the two kinds of RSS and Atom feeds generated from the
news index page.

This makes it possible to ship update-description files for release candidates.

 * locked the following English pages, leaving their translations
   editable:
   - security
   - about
   - doc
   - doc/about/warning
   - getting_started
   - contribute
 * locked doc/about/financials and its translations