Local Accounting Pages Ready

Billy's been doing a grand job knocking the local accounting pages into shape. This is based on Jamie's original work, but with some of the nastier hacks taken out and a lot of MySQL/PHP performance improvements from Andrew.

We can now see job numbers, CPU times, wall times and efficiencies for each group, plotted on a day/week or month basis.

There's still some work to be done - it would be nice to have a per-user plot, but the core is there and working well.

Oh, and it's checked into subversion finally. No more panics about losing the code.

It's probably in a good enough shape that other sites would find it useful now, actually.