- use findEffectiveSpecialiseValueList instead of findSpecialiseValueList. This permit to find the more appropriate model to use.
- fix mistake in docstring
- remove useless code parts
- fix the condition of seaching the best maching model (using the dates)


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27648 20353a03-c40f-0410-a6d1-a30d3c3de9de