Some theme fixes, debug system now forced (true)

Some theme fixes, debug system now forced (true)
- Some DEBUG_LOG() lines has given __FILE__ (like in functions.php) which
  will not give good debug messages, rewritten to __FUNCTION__
- DEBUG_LOG() is now always forced (true) except commented-out lines in
  surfbar-functions.php which I use for developing/debugging the surfbar
- CSS classes guest_skyscraper/member_skyscraper "beautified" ;-)