Posts hot and trending values are not updated during non-initial sync

Hot and trending values are calculated at the end of initial sync, but there is no functionality which updates the values when a new head block comes with votes for posts. The mechanism which updates hot/trending only for the posts touched in a new block must be implemented. We plan to add columns with blocks numbers to some of db tables, when it happens then hot/trends will be recalculated for posts marked with a head block at the end of its processing.