Add a Back to Wiki link on wiki pages

[Paul Everitt]

Backlog ID: 6 (Est: 1h)

(Note: this is related to, but not dependent on, this bug https://bugs.launchpad.net/karl3/+bug/399353 to get fixed. )

- Provide a "Back to Wiki" breadcrumb link on wiki pages that aren't the main wiki page.

- Note that there is a snippet that can do this with a ZPT macro:

      <div metal:use-macro="api.snippets.macros['backto_link']"/>

- It requires backto to be passed into the template renderer:

          backto=backto,

- Where backto looks like:

      backto = {
        'href': model_url(up_to, request),
        'title': up_to.title,
        }

...or None if you are on the main wiki page.

[Paul Everitt (paul-agendaless)]

Move to next week (M24).

[Paul Everitt (paul-agendaless)]

Move to this week.

[Paul Everitt (paul-agendaless)]

I wrote the report and put the output in 399353 then assigned to Nat. (There are 32 wiki pages that have a manual link back to the root.)

[Nat Katin-Borland (nborland)]

Looks good