reusing code of bridge calls in condenser_api
[Fix] get_account_reputations checks type of account_lower_bound parameter; also added default for limit (1000 - the same as it was in fat node)
[Fix] get_discussions_by_promoted reuse bridge_get_ranked_post_by_promoted* SQL functions (means code reuse + fix for paging and performance)
[Fix] get_post_discussions_by_payout reuse bridge_get_ranked_post_by_payout* SQL functions (means code reuse + fix for paging and performance); that required extra parameter to be able to turn off payout interval filter
[Fix] get_comment_discussions_by_payout reuse bridge_get_ranked_post_by_payout_comments* SQL functions (means code reuse + fix for paging and performance)
Old SQL implementations of above condenser_api calls removed.
[Fix] restored missing vote muting code in all above and more condenser_api calls