UI improvement: changed display of hours to reflect what people actuallywant to see, instead of just reflecting the state of the system. Now showsestimated amount of work remaining, rather than work done and total workrequired.
currency::widget now honours display mode (previously ignored it)currency::widget no longer stomps the trailing 0 off the fractional part (perviously it converted 50c into 05c over an edit/ok cycle and looked bad as well)
Added a link to a webpage that describes how nested sets works. Otherwise,it is difficult to figure out how to write queries against categories thatsort correctly. Thanks to Jeroen for this.
