Require weberizer >= 0.7.2
make the installation options findable on the page
add overzealously-removed info about licensing
add missing screenshot; remove six-year old reference to missing chapters
Merge pull request #76 from mk270/update-gtk-tutorial

add missing screenshot; remove six-year old reference to missing chapter...
tutorials/index.html: minor grammar fix
add overzealously-removed info about licensing
import license for Consortium members
add releases page and link it
link earlier releases
imported "a few papers on OCaml" (issue #35)
make formatting consistent; add invitation to contribute via tickets as well as code
capitalise github (sic)
Merge pull request #75 from mk270/rediscover-install

make the installation options findable on the page
Merge pull request #77 from mk270/tutorial-index

make formatting consistent; add invitation to contribute via tickets as ...
add Releases link to frontpage and French menu

Was previously added only to English menu.
format menu items consistently
menu: add langref.org
menu: simplify name of blogs item
search ocaml.org not ocaml-lang.org; fix typo