[Vala] Valadoc.org is fully operational again

[Al Thomas <astavale yahoo co uk>]

In case anyone hadn't noticed valadoc.org is fully working again.

Thanks to Elementary OS [1] who are hosting the site [2].

Development is now being done at https://github.com/valadoc and includes a number of recent updates, 
including better URIs for bookmarking and external linking. There is also work started on changing 
valadoc.org to use Valum [3].

The content is up to date. With Valum 0.3 [4] and libcolumbus [5] recently being added.

Thanks should also go out to Chris Daley of Valadate project for hosting a mirror ( 
http://valadoc.valadate.org ) and the company RooJSolutions ( http://valadoc.roojs.com ) for also hosting a 
mirror while things got back to normal.

[1] - https://elementary.io/
[2] - http://blog.elementary.io/post/152967321211/were-now-hosting-valadocorg
[3] - https://github.com/Valadoc/valadoc-org/pull/40
[4] - https://arteymix.github.io/valum/2016/11/11/announcing-valum-0-3.html
[5] - 
http://voices.canonical.com/jussi.pakkanen/2012/12/03/introducing-libcolumbus-a-fast-online-approximate-matching-library/