Changed range proof mantissa min_bits used by cli_wallet from 0 (automatic) to 49 (the largest bit length that won't exceed GRAPHENE_MAX_SHARE_SUPPLY).
Changed range proof mantissa min_bits used by cli_wallet from 0 (automatic) to 49 (the largest bit length that won't exceed GRAPHENE_MAX_SHARE_SUPPLY).

bitshares/bitshares-2,bitshares/bitshares-2,bitshares/bitshares-2,bitshares/bitshares-2