- implement test for ordered, invoiced and delivered business process with sequence not related to appearance of simulation tree with using of compensation
 - explain more in docstrings about tests
 - add comments relating to isBuildable implementation


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28127 20353a03-c40f-0410-a6d1-a30d3c3de9de