Config options for licence data

[earle]

We should have config options called licence_url and licence_info_url. The former would be used to link to the canonical page about a licence (e.g. something on creativecommons.org); the latter a local page about the licecse (like "Site Licence" on London).

[dom]

And also licence_name so in the default page footer:

This guide is licensed under the <a href="[% licence_url %]">[% licence_name %]

[ivorw]

Wholeheartedly agree. This information should be available as RDF, both sitewide, on the "about" page (default settings), and as part of the RDF for an individual page.

This will allow mirror sites to aggregate data from multiple guides, which have different licence terms - and be able to preserve the licence conditions of pages being mirrored.

We could make the code actually enforce the licence terms: source is quoted on the webpage, edits are redirected - either all the time, or via a window that allows the user to choose whether to fork the page or not.

[earle]

Once the config options are in I will look into getting them into the RDF. For reference:

http://web.resource.org/cc/

http://usefulinc.com/doap/licenses/

[dom]

(In [776]) Add licence variables (closes #56)