Bucketing of Dates

[KAPastor]

Hello,
This is not so much an issue but more of a request. It would be great to have things bucketted by week / month. Ie only have a smaller set of grid items (12 by 4/5 for weekly for example).

Not sure if this change is possible and to add a prop for bucket - (day,week,month) etc.!

Thanks and awesome work!