Customizable time frame for the discussion count attribute and sorting

[gurjyot]

Most types of sorting are present in this extension but the current sorting is done from the day a forum is started. How about sorting through a time frame like most discussions in a week or month or year. Specific date selector would also be better. This would help us in various community tasks and also keep members motivated as they can keep their track as compared to other members on weekly/monthly/yearly basis.