[ENH] Don't use global, only use Tiki::lib('lib here ;)');

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/experimental@49703 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] [09:17] <lphuberdeau> it's prefslib ;)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/experimental@49704 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] header, not headerlib

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/experimental@49705 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] Need ['value'] from pref

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/experimental@49706 b456876b-0849-0410-b77d-98878d47e9d5