arrange recommendations chronologically, avoid repetition and tweets older than 48 hours

[VlVEK]

issue:

1. the recommended tweets are sometimes 6-7 days old with outdated content
2. tweets are shown repetitively even after seen by the user several times
3. includes tweets already engaged by the user (reply / like / bookmark)

possible solutions

1. recommended tweets should be ranked by the time and only latest tweets to be shown preferably chronologically
2. once a recommended tweet is engaged with or does not meet the criteria of un-regrettable user minutes, it should be removed from future recommendations
3. tweets that already appear in the user profile (tweets_with_replies) should be excluded from the recommendation