[css-flexbox] Clean up issues list a bit more.
[css-flexbox] Update issues list link to actual issue tracker.
[css-grid] Whoops, messed up the 'identical algos' note wording.

--HG--
extra : rebase_source : f34eef7b8dbe6a596092a0e9646b3bcb47b45ba2
[css-grid] Alignment works within the content box, not padding box. (Fix stupid error.) <http://lists.w3.org/Archives/Public/www-style/2014Feb/0283.html>