[FIX]Displayed Time zone in the user wizard is consistent with user preferences AND respects the site wide setting to enforce site_default for all users.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49725 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] img zoom: Have to loop through each a[rel=zoom] after all to pick up the correct full size href.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49726 b456876b-0849-0410-b77d-98878d47e9d5
[FIX]When the site-wide timezone preference is set to "Site default" for all users, the user preferences page still displays the former user display_timezone choice (I don't get to fix that myself), but at least, with this commit, the user knows that the user preference he sees as his own is overriden by the site default timezone.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@49729 b456876b-0849-0410-b77d-98878d47e9d5