The new project weekly hours report (#240) has some issues when a project spans along multiple years:

• Columns aren't properly sorted: if the project starts in Dec 2015 and ends in January 2016, the columns that correspond to January are shown before December's.
• Same week values in multiple years are accumulated: if a multi-year project has some hours in week 30, 2015 and in week 30, 2016, there will only be one column for week 30 with the addition of hours in both years.