Angshu, Shruthi | #1626 | Using event_records_offset_marker table to keep a offset for count of events per category, so that we can gaurantee consistent fetch time for recent feeds.

Fixing all integration tests
Using EventRecordsOffsetMarker to determine total count
Using offset marker to fetch events
Revert "d3, hemanth | Added title on event"

This reverts commit e544278d85bdb5a847c486f4b0e74e82da4bb306.