Video Bigram C T R15 Max

Slice:	video_fresh
Index:	39
Name:	VideoBigramCTR15Max
Group:
Description:	Norm bigram maximal CTR with 15s dwell time for video wizard, calculate on desktop slice
Tags:	TG_DYNAMIC TG_QUERY_ONLY TG_USER TG_USER_SEARCH TG_FRESHNESS_USE
Authors:	masha-57
Responsibles:	masha-57 juver