Get rid of <iframe> and use JavaScript

Also the panels are not loaded if they are disabled on the initial page load.
Add hints and about pages
Add updating HighScore display

Also tidied up the FixDB function (I was planning on changing the DB columns again but decided not to)
Add VictoryBox for going up a level

The VictoryBox *CAN* squish the player.
It must be stomped on to go up a level, or it will disappear after 5 seconds.

This achieves three things:
1. Going up a level is not compulsory
2. There is one last chance to screw up
3. It is an excuse for another terrible box sprite

Players start from level 1 again, but will get a VictoryBox for the first 5 seconds
of each level they have completed.