* add new styles in ods render 
  When you use editable float field in listbox, you can enter a precison. If you enter a precision between 1 and 4, so you have between one and four decimal in your report. If precision is not enter or higher than four, so the report use default style for this filed ( ie : two decimals )

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@23761 20353a03-c40f-0410-a6d1-a30d3c3de9de