[MOD] Tiki divs added to support legacy themes, appropriate for the "classic" layout. Previous "Classic" layout will be re-added as "Basic".

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48402 b456876b-0849-0410-b77d-98878d47e9d5
[NEW] This layout was formerly "classic" but seems more appropriately named "basic".

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48403 b456876b-0849-0410-b77d-98878d47e9d5