Sets the date interval
For example if you wish to see the data from today to six months ago give the following params:
datatype = "month"
start = "-6"
end = "+1" the +1 indicates this month also
User: @author kevinvandevelde at atmire.com (kevin at atmire.com)
Date: 20-mei-2009
Time: 16:44:29
Class that will hold the data needed to show
statistical data in the browse, search pages
Method just used to log the parents Community log: owning comms
Collection log: owning comms & their comms Item log: owning colls/comms
Bitstream log: owning item/colls/comms