Bug - Wrong ")"

I'm not sure, but I think this is a pretty serious mistake I just
caught.
Moved up DoubleFactory

It is now important enough to be in the main file.
Cleanup Allowing Custom Row Names
Updated Test

Modular PlotJ, 'Demo' test, Relabeled DoubleFactory to DoubleFactoryTest
(as it primarily shows the difference between Factory and DoubleFactory,
instead of actually showing the results of DoubleFactory).