Only allow 'globaluserpage' preference to be set on Special:GlobalPreferences

Change-Id: Ia2fe0a950cc4e0a1db71d5256790aa32dcad6d9a
Use new "disableeditsection" parameter to action=parse

Introduced in I499c4bb0cd85, for 1.24 wikis we don't need to use
a CSS hack to hide the edit section links. For backwards-compatability
though, we'll still load the CSS.

For pre-1.24 wikis, this won't do anything.

Change-Id: Iaff55ae328015365e2e11c6eb8640a1753dbab9e
Stop hiding some CSS classes

Now that we're overriding Article's output, these items are no
longer being added to the output text.

Change-Id: I36ecea6e6524e5456d376d380d4020d35f9a54c3