[Feature request] Report with accumulated time per task

[juicestorediscount]

Hi, I like the timetracker feature and want to start using it with our team. One thing that's missing for us, is to create a report that gives an overview of how much time you've spent on a task per the selected time frame.

It could generate a spreadsheet that's like this (with the dashes indicating the different columns) :

Time per tasks on Client X in period January 1 - January 31st

2h - Task 1 - Project A
5h - Task 2 - Project A
7h - Task 3 - Project B
1.5h - Task 4 - Project B