- improve speed by not parsing all day of year day by day
- improve speed by looking at much less object in zodb and use
what provides getInventoryList
- do as little as possible object retrieval to display project lines title
- make this report working for task reports associated to projects
(before it was working only with project lines)
- make this report working in another context than a project, so this
means it will be able to show results for different projects

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43603 20353a03-c40f-0410-a6d1-a30d3c3de9de