Extend the number of events that can be loaded to a report

[SergeSemenov]

Seems like the current limitation of number of events that can be loaded from a data source is 100,000. That does not allow us to do slice and dice on many variables for a big time window. It would be nice to make that setting configurable to set a custom limit of events that can be loaded at a time. Another option would be is a setting that always shows data for X number of hours (i.e. NOW minus X hours), regardless how many events need to be loaded. Reference issue: http://community.powerbi.com/t5/Service/Where-is-my-Historic-Data-I-can-see-events-from-past-hour-only/m-p/90471