GWT 2.1

I've just upgraded to GWT 2.1 M3 without any problems.

Advantage:
It contains implementation of BigDecimal - this way I can get away with dependency on external get-math library.

Disadvantage:
There is no documentation for announced DataPresentationWidget. I hoped to get away also with gwt-visualization, it is a nice piece of software but it does not make any sense to suck in all that stuff only to have nicer tables. So still waiting for better times.