20130119b4

- All credit to Luis Lopes for the continuing reports leading to p0026,
p0027, p0028
- Fixed p0027. Was missing cast to integer() in each case.
- Fixed scene master UI wiring bug that triggered p0028.
- Fixed p0026.
- Removed debug info() from the utility code.
- Tweaking Scene Master interface to tidy it up before new content
arrives.
- Removed DEBUG button from UI for beta builds. No longer needed.
- Beta 3 shipped with experimental Kray code enabled. This build
doesn't - it's not ready for beta at all yet.