Update the function media_set_retains_sw_data_for_date to correctly handle the case in which a media set has explicitly set sw_data dates.
Update the function media_set_retains_sw_data_for_date to correctly handle the case in which a media set has explicitly set sw_data dates.


AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,AchyuthIIIT/mediacloud,berkmancenter/mediacloud,AchyuthIIIT/mediacloud